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Finding the Fourth Proportional to 365,688.60, 547,463.70 and 260,712.60

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Solution

The fourth proportional to 365,688.60, 547,463.70 and 260,712.60 is: 390,306.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,688.60 : 547,463.70 = 260,712.60 : x
  2. Step 2: Convert to fraction form
    365,688.60/547,463.70 = 260,712.60/x
  3. Step 3: Cross multiply
    365,688.60x = 547,463.70 × 260,712.60
  4. Step 4: Simplify right side
    365,688.60x = 142,730,684,632.62
  5. Step 5: Solve for x
    x = 142,730,684,632.62/365,688.60
  6. Step 6: Final answer
    x = 390,306.63

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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.