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Finding the Fourth Proportional to 283,438.83, 391,130.82 and 176,006.55

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Solution

The fourth proportional to 283,438.83, 391,130.82 and 176,006.55 is: 242,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,438.83 : 391,130.82 = 176,006.55 : x
  2. Step 2: Convert to fraction form
    283,438.83/391,130.82 = 176,006.55/x
  3. Step 3: Cross multiply
    283,438.83x = 391,130.82 × 176,006.55
  4. Step 4: Simplify right side
    283,438.83x = 68,841,586,226.87
  5. Step 5: Solve for x
    x = 68,841,586,226.87/283,438.83
  6. Step 6: Final answer
    x = 242,879.87

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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.