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Finding the Fourth Proportional to 639,774,470.70, 959,661,706.05 and 639,774,470.70

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Solution

The fourth proportional to 639,774,470.70, 959,661,706.05 and 639,774,470.70 is: 959,661,706.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,774,470.70 : 959,661,706.05 = 639,774,470.70 : x
  2. Step 2: Convert to fraction form
    639,774,470.70/959,661,706.05 = 639,774,470.70/x
  3. Step 3: Cross multiply
    639,774,470.70x = 959,661,706.05 × 639,774,470.70
  4. Step 4: Simplify right side
    639,774,470.70x = 613,967,060,039,197,696
  5. Step 5: Solve for x
    x = 613,967,060,039,197,696/639,774,470.70
  6. Step 6: Final answer
    x = 959,661,706.05

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.