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Finding the Fourth Proportional to 125,569.80, 188,354.70 and 73,038.60

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Solution

The fourth proportional to 125,569.80, 188,354.70 and 73,038.60 is: 109,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,569.80 : 188,354.70 = 73,038.60 : x
  2. Step 2: Convert to fraction form
    125,569.80/188,354.70 = 73,038.60/x
  3. Step 3: Cross multiply
    125,569.80x = 188,354.70 × 73,038.60
  4. Step 4: Simplify right side
    125,569.80x = 13,757,163,591.42
  5. Step 5: Solve for x
    x = 13,757,163,591.42/125,569.80
  6. Step 6: Final answer
    x = 109,557.90

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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.