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Finding the Fourth Proportional to 532,970.60, 735,508.50 and 318,068.96

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Solution

The fourth proportional to 532,970.60, 735,508.50 and 318,068.96 is: 438,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,970.60 : 735,508.50 = 318,068.96 : x
  2. Step 2: Convert to fraction form
    532,970.60/735,508.50 = 318,068.96/x
  3. Step 3: Cross multiply
    532,970.60x = 735,508.50 × 318,068.96
  4. Step 4: Simplify right side
    532,970.60x = 233,942,423,666.16
  5. Step 5: Solve for x
    x = 233,942,423,666.16/532,970.60
  6. Step 6: Final answer
    x = 438,940.58

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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.