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Finding the Fourth Proportional to 172,240.32, 237,691.74 and 99,653.40

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Solution

The fourth proportional to 172,240.32, 237,691.74 and 99,653.40 is: 137,521.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,240.32 : 237,691.74 = 99,653.40 : x
  2. Step 2: Convert to fraction form
    172,240.32/237,691.74 = 99,653.40/x
  3. Step 3: Cross multiply
    172,240.32x = 237,691.74 × 99,653.40
  4. Step 4: Simplify right side
    172,240.32x = 23,686,790,042.92
  5. Step 5: Solve for x
    x = 23,686,790,042.92/172,240.32
  6. Step 6: Final answer
    x = 137,521.75

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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.