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Finding the Fourth Proportional to 99,363.20, 137,119.86 and 54,040.20

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Solution

The fourth proportional to 99,363.20, 137,119.86 and 54,040.20 is: 74,574.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,363.20 : 137,119.86 = 54,040.20 : x
  2. Step 2: Convert to fraction form
    99,363.20/137,119.86 = 54,040.20/x
  3. Step 3: Cross multiply
    99,363.20x = 137,119.86 × 54,040.20
  4. Step 4: Simplify right side
    99,363.20x = 7,409,984,658.37
  5. Step 5: Solve for x
    x = 7,409,984,658.37/99,363.20
  6. Step 6: Final answer
    x = 74,574.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.