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Finding the Fourth Proportional to 283,657.61, 391,446.69 and 156,333.17

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Solution

The fourth proportional to 283,657.61, 391,446.69 and 156,333.17 is: 215,739.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,657.61 : 391,446.69 = 156,333.17 : x
  2. Step 2: Convert to fraction form
    283,657.61/391,446.69 = 156,333.17/x
  3. Step 3: Cross multiply
    283,657.61x = 391,446.69 × 156,333.17
  4. Step 4: Simplify right side
    283,657.61x = 61,196,101,933.71
  5. Step 5: Solve for x
    x = 61,196,101,933.71/283,657.61
  6. Step 6: Final answer
    x = 215,739.33

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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.