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Finding the Fourth Proportional to 631,805.70, 947,708.55 and 631,805.70

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Solution

The fourth proportional to 631,805.70, 947,708.55 and 631,805.70 is: 947,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,805.70 : 947,708.55 = 631,805.70 : x
  2. Step 2: Convert to fraction form
    631,805.70/947,708.55 = 631,805.70/x
  3. Step 3: Cross multiply
    631,805.70x = 947,708.55 × 631,805.70
  4. Step 4: Simplify right side
    631,805.70x = 598,767,663,828.74
  5. Step 5: Solve for x
    x = 598,767,663,828.74/631,805.70
  6. Step 6: Final answer
    x = 947,708.55

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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.