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Finding the Fourth Proportional to 284,176.19, 392,135.19 and 156,843.59

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Solution

The fourth proportional to 284,176.19, 392,135.19 and 156,843.59 is: 216,428.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,176.19 : 392,135.19 = 156,843.59 : x
  2. Step 2: Convert to fraction form
    284,176.19/392,135.19 = 156,843.59/x
  3. Step 3: Cross multiply
    284,176.19x = 392,135.19 × 156,843.59
  4. Step 4: Simplify right side
    284,176.19x = 61,503,890,964.93
  5. Step 5: Solve for x
    x = 61,503,890,964.93/284,176.19
  6. Step 6: Final answer
    x = 216,428.73

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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.