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Finding the Fourth Proportional to 425,139.35, 586,648.89 and 261,769.95

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Solution

The fourth proportional to 425,139.35, 586,648.89 and 261,769.95 is: 361,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,139.35 : 586,648.89 = 261,769.95 : x
  2. Step 2: Convert to fraction form
    425,139.35/586,648.89 = 261,769.95/x
  3. Step 3: Cross multiply
    425,139.35x = 586,648.89 × 261,769.95
  4. Step 4: Simplify right side
    425,139.35x = 153,567,050,602.86
  5. Step 5: Solve for x
    x = 153,567,050,602.86/425,139.35
  6. Step 6: Final answer
    x = 361,215.80

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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.