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Finding the Fourth Proportional to 283,597.61, 391,373.06 and 156,281.40

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Solution

The fourth proportional to 283,597.61, 391,373.06 and 156,281.40 is: 215,672.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,597.61 : 391,373.06 = 156,281.40 : x
  2. Step 2: Convert to fraction form
    283,597.61/391,373.06 = 156,281.40/x
  3. Step 3: Cross multiply
    283,597.61x = 391,373.06 × 156,281.40
  4. Step 4: Simplify right side
    283,597.61x = 61,164,328,957.68
  5. Step 5: Solve for x
    x = 61,164,328,957.68/283,597.61
  6. Step 6: Final answer
    x = 215,672.94

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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.