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Finding the Fourth Proportional to 651,290.70, 976,936.05 and 540,698.70

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Solution

The fourth proportional to 651,290.70, 976,936.05 and 540,698.70 is: 811,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,290.70 : 976,936.05 = 540,698.70 : x
  2. Step 2: Convert to fraction form
    651,290.70/976,936.05 = 540,698.70/x
  3. Step 3: Cross multiply
    651,290.70x = 976,936.05 × 540,698.70
  4. Step 4: Simplify right side
    651,290.70x = 528,228,052,218.14
  5. Step 5: Solve for x
    x = 528,228,052,218.14/651,290.70
  6. Step 6: Final answer
    x = 811,048.05

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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.