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Finding the Fourth Proportional to 79,655.88, 119,448.76 and 42,207.32

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Solution

The fourth proportional to 79,655.88, 119,448.76 and 42,207.32 is: 63,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,655.88 : 119,448.76 = 42,207.32 : x
  2. Step 2: Convert to fraction form
    79,655.88/119,448.76 = 42,207.32/x
  3. Step 3: Cross multiply
    79,655.88x = 119,448.76 × 42,207.32
  4. Step 4: Simplify right side
    79,655.88x = 5,041,612,142.44
  5. Step 5: Solve for x
    x = 5,041,612,142.44/79,655.88
  6. Step 6: Final answer
    x = 63,292.40

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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.