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Finding the Fourth Proportional to 225,432.32, 311,092.80 and 124,828.16

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Solution

The fourth proportional to 225,432.32, 311,092.80 and 124,828.16 is: 172,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,432.32 : 311,092.80 = 124,828.16 : x
  2. Step 2: Convert to fraction form
    225,432.32/311,092.80 = 124,828.16/x
  3. Step 3: Cross multiply
    225,432.32x = 311,092.80 × 124,828.16
  4. Step 4: Simplify right side
    225,432.32x = 38,833,141,813.25
  5. Step 5: Solve for x
    x = 38,833,141,813.25/225,432.32
  6. Step 6: Final answer
    x = 172,260.76

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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.