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Finding the Fourth Proportional to 128,958.56, 193,407.60 and 62,365.76

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Solution

The fourth proportional to 128,958.56, 193,407.60 and 62,365.76 is: 93,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,958.56 : 193,407.60 = 62,365.76 : x
  2. Step 2: Convert to fraction form
    128,958.56/193,407.60 = 62,365.76/x
  3. Step 3: Cross multiply
    128,958.56x = 193,407.60 × 62,365.76
  4. Step 4: Simplify right side
    128,958.56x = 12,062,011,963.78
  5. Step 5: Solve for x
    x = 12,062,011,963.78/128,958.56
  6. Step 6: Final answer
    x = 93,534.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.