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Finding the Fourth Proportional to 529,275.20, 793,912.80 and 520,059.20

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Solution

The fourth proportional to 529,275.20, 793,912.80 and 520,059.20 is: 780,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,275.20 : 793,912.80 = 520,059.20 : x
  2. Step 2: Convert to fraction form
    529,275.20/793,912.80 = 520,059.20/x
  3. Step 3: Cross multiply
    529,275.20x = 793,912.80 × 520,059.20
  4. Step 4: Simplify right side
    529,275.20x = 412,881,655,637.76
  5. Step 5: Solve for x
    x = 412,881,655,637.76/529,275.20
  6. Step 6: Final answer
    x = 780,088.80

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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.