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Finding the Fourth Proportional to 316,267.68, 474,389.52 and 79,607.28

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Solution

The fourth proportional to 316,267.68, 474,389.52 and 79,607.28 is: 119,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,267.68 : 474,389.52 = 79,607.28 : x
  2. Step 2: Convert to fraction form
    316,267.68/474,389.52 = 79,607.28/x
  3. Step 3: Cross multiply
    316,267.68x = 474,389.52 × 79,607.28
  4. Step 4: Simplify right side
    316,267.68x = 37,764,859,347.71
  5. Step 5: Solve for x
    x = 37,764,859,347.71/316,267.68
  6. Step 6: Final answer
    x = 119,407.90

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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.