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Finding the Fourth Proportional to 99,046.32, 136,683.12 and 53,724.19

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Solution

The fourth proportional to 99,046.32, 136,683.12 and 53,724.19 is: 74,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,046.32 : 136,683.12 = 53,724.19 : x
  2. Step 2: Convert to fraction form
    99,046.32/136,683.12 = 53,724.19/x
  3. Step 3: Cross multiply
    99,046.32x = 136,683.12 × 53,724.19
  4. Step 4: Simplify right side
    99,046.32x = 7,343,189,908.67
  5. Step 5: Solve for x
    x = 7,343,189,908.67/99,046.32
  6. Step 6: Final answer
    x = 74,138.95

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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.