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Finding the Fourth Proportional to 107,925.80, 161,823.90 and 55,437.80

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Solution

The fourth proportional to 107,925.80, 161,823.90 and 55,437.80 is: 83,123.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,925.80 : 161,823.90 = 55,437.80 : x
  2. Step 2: Convert to fraction form
    107,925.80/161,823.90 = 55,437.80/x
  3. Step 3: Cross multiply
    107,925.80x = 161,823.90 × 55,437.80
  4. Step 4: Simplify right side
    107,925.80x = 8,971,161,003.42
  5. Step 5: Solve for x
    x = 8,971,161,003.42/107,925.80
  6. Step 6: Final answer
    x = 83,123.41

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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.