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Finding the Fourth Proportional to 283,597.76, 391,373.14 and 156,281.56

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Solution

The fourth proportional to 283,597.76, 391,373.14 and 156,281.56 is: 215,673.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,597.76 : 391,373.14 = 156,281.56 : x
  2. Step 2: Convert to fraction form
    283,597.76/391,373.14 = 156,281.56/x
  3. Step 3: Cross multiply
    283,597.76x = 391,373.14 × 156,281.56
  4. Step 4: Simplify right side
    283,597.76x = 61,164,404,861.30
  5. Step 5: Solve for x
    x = 61,164,404,861.30/283,597.76
  6. Step 6: Final answer
    x = 215,673.09

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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.