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Finding the Fourth Proportional to 121,568.47, 167,747.95 and 70,573.12

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Solution

The fourth proportional to 121,568.47, 167,747.95 and 70,573.12 is: 97,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,568.47 : 167,747.95 = 70,573.12 : x
  2. Step 2: Convert to fraction form
    121,568.47/167,747.95 = 70,573.12/x
  3. Step 3: Cross multiply
    121,568.47x = 167,747.95 × 70,573.12
  4. Step 4: Simplify right side
    121,568.47x = 11,838,496,205.10
  5. Step 5: Solve for x
    x = 11,838,496,205.10/121,568.47
  6. Step 6: Final answer
    x = 97,381.30

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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.