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Finding the Fourth Proportional to 63,422.91, 87,582.45 and 47,479.68

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Solution

The fourth proportional to 63,422.91, 87,582.45 and 47,479.68 is: 65,566.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,422.91 : 87,582.45 = 47,479.68 : x
  2. Step 2: Convert to fraction form
    63,422.91/87,582.45 = 47,479.68/x
  3. Step 3: Cross multiply
    63,422.91x = 87,582.45 × 47,479.68
  4. Step 4: Simplify right side
    63,422.91x = 4,158,386,699.62
  5. Step 5: Solve for x
    x = 4,158,386,699.62/63,422.91
  6. Step 6: Final answer
    x = 65,566.00

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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.