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Finding the Fourth Proportional to 119,967.60, 165,587.36 and 68,985.90

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Solution

The fourth proportional to 119,967.60, 165,587.36 and 68,985.90 is: 95,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,967.60 : 165,587.36 = 68,985.90 : x
  2. Step 2: Convert to fraction form
    119,967.60/165,587.36 = 68,985.90/x
  3. Step 3: Cross multiply
    119,967.60x = 165,587.36 × 68,985.90
  4. Step 4: Simplify right side
    119,967.60x = 11,423,193,058.22
  5. Step 5: Solve for x
    x = 11,423,193,058.22/119,967.60
  6. Step 6: Final answer
    x = 95,218.98

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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.