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Finding the Fourth Proportional to 156,616.39, 216,167.70 and 92,990.89

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Solution

The fourth proportional to 156,616.39, 216,167.70 and 92,990.89 is: 128,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,616.39 : 216,167.70 = 92,990.89 : x
  2. Step 2: Convert to fraction form
    156,616.39/216,167.70 = 92,990.89/x
  3. Step 3: Cross multiply
    156,616.39x = 216,167.70 × 92,990.89
  4. Step 4: Simplify right side
    156,616.39x = 20,101,626,812.25
  5. Step 5: Solve for x
    x = 20,101,626,812.25/156,616.39
  6. Step 6: Final answer
    x = 128,349.45

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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.