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Finding the Fourth Proportional to 116,909.52, 161,329.08 and 65,920.83

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Solution

The fourth proportional to 116,909.52, 161,329.08 and 65,920.83 is: 90,967.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,909.52 : 161,329.08 = 65,920.83 : x
  2. Step 2: Convert to fraction form
    116,909.52/161,329.08 = 65,920.83/x
  3. Step 3: Cross multiply
    116,909.52x = 161,329.08 × 65,920.83
  4. Step 4: Simplify right side
    116,909.52x = 10,634,946,856.74
  5. Step 5: Solve for x
    x = 10,634,946,856.74/116,909.52
  6. Step 6: Final answer
    x = 90,967.33

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1.5x scale

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.