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Finding the Fourth Proportional to 529,778.68, 721,313.40 and 528,097.12

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Solution

The fourth proportional to 529,778.68, 721,313.40 and 528,097.12 is: 719,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,778.68 : 721,313.40 = 528,097.12 : x
  2. Step 2: Convert to fraction form
    529,778.68/721,313.40 = 528,097.12/x
  3. Step 3: Cross multiply
    529,778.68x = 721,313.40 × 528,097.12
  4. Step 4: Simplify right side
    529,778.68x = 380,923,529,334.49
  5. Step 5: Solve for x
    x = 380,923,529,334.49/529,778.68
  6. Step 6: Final answer
    x = 719,023.90

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.