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Finding the Fourth Proportional to 125,503.07, 187,784.06 and 74,716.32

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Solution

The fourth proportional to 125,503.07, 187,784.06 and 74,716.32 is: 111,794.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,503.07 : 187,784.06 = 74,716.32 : x
  2. Step 2: Convert to fraction form
    125,503.07/187,784.06 = 74,716.32/x
  3. Step 3: Cross multiply
    125,503.07x = 187,784.06 × 74,716.32
  4. Step 4: Simplify right side
    125,503.07x = 14,030,534,248.47
  5. Step 5: Solve for x
    x = 14,030,534,248.47/125,503.07
  6. Step 6: Final answer
    x = 111,794.36

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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.