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Finding the Fourth Proportional to 283,738.88, 391,560.84 and 156,411.68

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Solution

The fourth proportional to 283,738.88, 391,560.84 and 156,411.68 is: 215,848.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,738.88 : 391,560.84 = 156,411.68 : x
  2. Step 2: Convert to fraction form
    283,738.88/391,560.84 = 156,411.68/x
  3. Step 3: Cross multiply
    283,738.88x = 391,560.84 × 156,411.68
  4. Step 4: Simplify right side
    283,738.88x = 61,244,688,806.61
  5. Step 5: Solve for x
    x = 61,244,688,806.61/283,738.88
  6. Step 6: Final answer
    x = 215,848.77

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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.