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Finding the Fourth Proportional to 125,924.10, 188,886.15 and 72,707.10

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Solution

The fourth proportional to 125,924.10, 188,886.15 and 72,707.10 is: 109,060.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,924.10 : 188,886.15 = 72,707.10 : x
  2. Step 2: Convert to fraction form
    125,924.10/188,886.15 = 72,707.10/x
  3. Step 3: Cross multiply
    125,924.10x = 188,886.15 × 72,707.10
  4. Step 4: Simplify right side
    125,924.10x = 13,733,364,196.67
  5. Step 5: Solve for x
    x = 13,733,364,196.67/125,924.10
  6. Step 6: Final answer
    x = 109,060.65

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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.