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Finding the Fourth Proportional to 529,779.68, 721,314.77 and 528,098.12

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Solution

The fourth proportional to 529,779.68, 721,314.77 and 528,098.12 is: 719,025.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,779.68 : 721,314.77 = 528,098.12 : x
  2. Step 2: Convert to fraction form
    529,779.68/721,314.77 = 528,098.12/x
  3. Step 3: Cross multiply
    529,779.68x = 721,314.77 × 528,098.12
  4. Step 4: Simplify right side
    529,779.68x = 380,924,973,965.23
  5. Step 5: Solve for x
    x = 380,924,973,965.23/529,779.68
  6. Step 6: Final answer
    x = 719,025.26

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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.