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Finding the Fourth Proportional to 341,931.80, 512,897.67 and 92,613.80

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Solution

The fourth proportional to 341,931.80, 512,897.67 and 92,613.80 is: 138,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,931.80 : 512,897.67 = 92,613.80 : x
  2. Step 2: Convert to fraction form
    341,931.80/512,897.67 = 92,613.80/x
  3. Step 3: Cross multiply
    341,931.80x = 512,897.67 × 92,613.80
  4. Step 4: Simplify right side
    341,931.80x = 47,501,402,229.85
  5. Step 5: Solve for x
    x = 47,501,402,229.85/341,931.80
  6. Step 6: Final answer
    x = 138,920.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.