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Finding the Fourth Proportional to 955,641.12, 1,318,755.84 and 525,920.64

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Solution

The fourth proportional to 955,641.12, 1,318,755.84 and 525,920.64 is: 725,754.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    955,641.12 : 1,318,755.84 = 525,920.64 : x
  2. Step 2: Convert to fraction form
    955,641.12/1,318,755.84 = 525,920.64/x
  3. Step 3: Cross multiply
    955,641.12x = 1,318,755.84 × 525,920.64
  4. Step 4: Simplify right side
    955,641.12x = 693,560,915,376.54
  5. Step 5: Solve for x
    x = 693,560,915,376.54/955,641.12
  6. Step 6: Final answer
    x = 725,754.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.