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Finding the Fourth Proportional to 193,187.60, 289,925.40 and 99,645.20

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Solution

The fourth proportional to 193,187.60, 289,925.40 and 99,645.20 is: 149,542.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,187.60 : 289,925.40 = 99,645.20 : x
  2. Step 2: Convert to fraction form
    193,187.60/289,925.40 = 99,645.20/x
  3. Step 3: Cross multiply
    193,187.60x = 289,925.40 × 99,645.20
  4. Step 4: Simplify right side
    193,187.60x = 28,889,674,468.08
  5. Step 5: Solve for x
    x = 28,889,674,468.08/193,187.60
  6. Step 6: Final answer
    x = 149,542.07

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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.