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Finding the Fourth Proportional to 74,892.55, 112,338.83 and 19,488.55

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Solution

The fourth proportional to 74,892.55, 112,338.83 and 19,488.55 is: 29,232.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,892.55 : 112,338.83 = 19,488.55 : x
  2. Step 2: Convert to fraction form
    74,892.55/112,338.83 = 19,488.55/x
  3. Step 3: Cross multiply
    74,892.55x = 112,338.83 × 19,488.55
  4. Step 4: Simplify right side
    74,892.55x = 2,189,320,807.95
  5. Step 5: Solve for x
    x = 2,189,320,807.95/74,892.55
  6. Step 6: Final answer
    x = 29,232.83

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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.