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Finding the Fourth Proportional to 156,381.76, 215,801.58 and 92,681.74

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Solution

The fourth proportional to 156,381.76, 215,801.58 and 92,681.74 is: 127,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,381.76 : 215,801.58 = 92,681.74 : x
  2. Step 2: Convert to fraction form
    156,381.76/215,801.58 = 92,681.74/x
  3. Step 3: Cross multiply
    156,381.76x = 215,801.58 × 92,681.74
  4. Step 4: Simplify right side
    156,381.76x = 20,000,865,929.15
  5. Step 5: Solve for x
    x = 20,000,865,929.15/156,381.76
  6. Step 6: Final answer
    x = 127,897.69

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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.