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Finding the Fourth Proportional to 119,358.60, 179,037.90 and 56,139.42

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Solution

The fourth proportional to 119,358.60, 179,037.90 and 56,139.42 is: 84,209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,358.60 : 179,037.90 = 56,139.42 : x
  2. Step 2: Convert to fraction form
    119,358.60/179,037.90 = 56,139.42/x
  3. Step 3: Cross multiply
    119,358.60x = 179,037.90 × 56,139.42
  4. Step 4: Simplify right side
    119,358.60x = 10,051,083,864.02
  5. Step 5: Solve for x
    x = 10,051,083,864.02/119,358.60
  6. Step 6: Final answer
    x = 84,209.13

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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.