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Finding the Fourth Proportional to 72,726.75, 100,364.13 and 47,576.25

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Solution

The fourth proportional to 72,726.75, 100,364.13 and 47,576.25 is: 65,656.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,726.75 : 100,364.13 = 47,576.25 : x
  2. Step 2: Convert to fraction form
    72,726.75/100,364.13 = 47,576.25/x
  3. Step 3: Cross multiply
    72,726.75x = 100,364.13 × 47,576.25
  4. Step 4: Simplify right side
    72,726.75x = 4,774,948,939.91
  5. Step 5: Solve for x
    x = 4,774,948,939.91/72,726.75
  6. Step 6: Final answer
    x = 65,656.02

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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.