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Finding the Fourth Proportional to 526,593.60, 725,911.20 and 383,126.40

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Solution

The fourth proportional to 526,593.60, 725,911.20 and 383,126.40 is: 528,141.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,593.60 : 725,911.20 = 383,126.40 : x
  2. Step 2: Convert to fraction form
    526,593.60/725,911.20 = 383,126.40/x
  3. Step 3: Cross multiply
    526,593.60x = 725,911.20 × 383,126.40
  4. Step 4: Simplify right side
    526,593.60x = 278,115,744,775.68
  5. Step 5: Solve for x
    x = 278,115,744,775.68/526,593.60
  6. Step 6: Final answer
    x = 528,141.14

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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.