Home / 128,545.55-192,773.16-38,561.43

Finding the Fourth Proportional to 128,545.55, 192,773.16 and 38,561.43

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Solution

The fourth proportional to 128,545.55, 192,773.16 and 38,561.43 is: 57,828.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,545.55 : 192,773.16 = 38,561.43 : x
  2. Step 2: Convert to fraction form
    128,545.55/192,773.16 = 38,561.43/x
  3. Step 3: Cross multiply
    128,545.55x = 192,773.16 × 38,561.43
  4. Step 4: Simplify right side
    128,545.55x = 7,433,608,715.22
  5. Step 5: Solve for x
    x = 7,433,608,715.22/128,545.55
  6. Step 6: Final answer
    x = 57,828.60

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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.