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Finding the Fourth Proportional to 124,672.34, 186,981.78 and 35,909.30

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Solution

The fourth proportional to 124,672.34, 186,981.78 and 35,909.30 is: 53,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,672.34 : 186,981.78 = 35,909.30 : x
  2. Step 2: Convert to fraction form
    124,672.34/186,981.78 = 35,909.30/x
  3. Step 3: Cross multiply
    124,672.34x = 186,981.78 × 35,909.30
  4. Step 4: Simplify right side
    124,672.34x = 6,714,384,832.55
  5. Step 5: Solve for x
    x = 6,714,384,832.55/124,672.34
  6. Step 6: Final answer
    x = 53,856.25

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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.