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Finding the Fourth Proportional to 283,628.73, 391,407.63 and 156,304.32

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Solution

The fourth proportional to 283,628.73, 391,407.63 and 156,304.32 is: 215,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,628.73 : 391,407.63 = 156,304.32 : x
  2. Step 2: Convert to fraction form
    283,628.73/391,407.63 = 156,304.32/x
  3. Step 3: Cross multiply
    283,628.73x = 391,407.63 × 156,304.32
  4. Step 4: Simplify right side
    283,628.73x = 61,178,703,449.96
  5. Step 5: Solve for x
    x = 61,178,703,449.96/283,628.73
  6. Step 6: Final answer
    x = 215,699.95

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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.