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Finding the Fourth Proportional to 113,718.40, 156,927.99 and 63,417.40

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Solution

The fourth proportional to 113,718.40, 156,927.99 and 63,417.40 is: 87,514.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,718.40 : 156,927.99 = 63,417.40 : x
  2. Step 2: Convert to fraction form
    113,718.40/156,927.99 = 63,417.40/x
  3. Step 3: Cross multiply
    113,718.40x = 156,927.99 × 63,417.40
  4. Step 4: Simplify right side
    113,718.40x = 9,951,965,113.03
  5. Step 5: Solve for x
    x = 9,951,965,113.03/113,718.40
  6. Step 6: Final answer
    x = 87,514.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.