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Finding the Fourth Proportional to 125,087.88, 187,632.78 and 36,347.40

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Solution

The fourth proportional to 125,087.88, 187,632.78 and 36,347.40 is: 54,521.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,087.88 : 187,632.78 = 36,347.40 : x
  2. Step 2: Convert to fraction form
    125,087.88/187,632.78 = 36,347.40/x
  3. Step 3: Cross multiply
    125,087.88x = 187,632.78 × 36,347.40
  4. Step 4: Simplify right side
    125,087.88x = 6,819,963,707.77
  5. Step 5: Solve for x
    x = 6,819,963,707.77/125,087.88
  6. Step 6: Final answer
    x = 54,521.38

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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.