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Finding the Fourth Proportional to 139,712.95, 209,505.18 and 44,925.64

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Solution

The fourth proportional to 139,712.95, 209,505.18 and 44,925.64 is: 67,367.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,712.95 : 209,505.18 = 44,925.64 : x
  2. Step 2: Convert to fraction form
    139,712.95/209,505.18 = 44,925.64/x
  3. Step 3: Cross multiply
    139,712.95x = 209,505.18 × 44,925.64
  4. Step 4: Simplify right side
    139,712.95x = 9,412,153,939.52
  5. Step 5: Solve for x
    x = 9,412,153,939.52/139,712.95
  6. Step 6: Final answer
    x = 67,367.80

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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.