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Finding the Fourth Proportional to 283,598.61, 391,374.44 and 156,282.40

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Solution

The fourth proportional to 283,598.61, 391,374.44 and 156,282.40 is: 215,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,598.61 : 391,374.44 = 156,282.40 : x
  2. Step 2: Convert to fraction form
    283,598.61/391,374.44 = 156,282.40/x
  3. Step 3: Cross multiply
    283,598.61x = 391,374.44 × 156,282.40
  4. Step 4: Simplify right side
    283,598.61x = 61,164,936,781.86
  5. Step 5: Solve for x
    x = 61,164,936,781.86/283,598.61
  6. Step 6: Final answer
    x = 215,674.32

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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.