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Finding the Fourth Proportional to 125,506.65, 188,133.61 and 55,373.61

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Solution

The fourth proportional to 125,506.65, 188,133.61 and 55,373.61 is: 83,004.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,506.65 : 188,133.61 = 55,373.61 : x
  2. Step 2: Convert to fraction form
    125,506.65/188,133.61 = 55,373.61/x
  3. Step 3: Cross multiply
    125,506.65x = 188,133.61 × 55,373.61
  4. Step 4: Simplify right side
    125,506.65x = 10,417,637,148.03
  5. Step 5: Solve for x
    x = 10,417,637,148.03/125,506.65
  6. Step 6: Final answer
    x = 83,004.66

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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.