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Finding the Fourth Proportional to 283,655.61, 391,443.93 and 156,331.17

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Solution

The fourth proportional to 283,655.61, 391,443.93 and 156,331.17 is: 215,736.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,655.61 : 391,443.93 = 156,331.17 : x
  2. Step 2: Convert to fraction form
    283,655.61/391,443.93 = 156,331.17/x
  3. Step 3: Cross multiply
    283,655.61x = 391,443.93 × 156,331.17
  4. Step 4: Simplify right side
    283,655.61x = 61,194,887,566.30
  5. Step 5: Solve for x
    x = 61,194,887,566.30/283,655.61
  6. Step 6: Final answer
    x = 215,736.57

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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.