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Finding the Fourth Proportional to 91,843.60, 137,502.60 and 56,545.60

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Solution

The fourth proportional to 91,843.60, 137,502.60 and 56,545.60 is: 84,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,843.60 : 137,502.60 = 56,545.60 : x
  2. Step 2: Convert to fraction form
    91,843.60/137,502.60 = 56,545.60/x
  3. Step 3: Cross multiply
    91,843.60x = 137,502.60 × 56,545.60
  4. Step 4: Simplify right side
    91,843.60x = 7,775,167,018.56
  5. Step 5: Solve for x
    x = 7,775,167,018.56/91,843.60
  6. Step 6: Final answer
    x = 84,656.60

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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.