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Finding the Fourth Proportional to 283,361.52, 391,038.86 and 156,036.80

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Solution

The fourth proportional to 283,361.52, 391,038.86 and 156,036.80 is: 215,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,361.52 : 391,038.86 = 156,036.80 : x
  2. Step 2: Convert to fraction form
    283,361.52/391,038.86 = 156,036.80/x
  3. Step 3: Cross multiply
    283,361.52x = 391,038.86 × 156,036.80
  4. Step 4: Simplify right side
    283,361.52x = 61,016,452,390.05
  5. Step 5: Solve for x
    x = 61,016,452,390.05/283,361.52
  6. Step 6: Final answer
    x = 215,330.76

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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.