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Finding the Fourth Proportional to 121,470.62, 167,633.62 and 70,479.50

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Solution

The fourth proportional to 121,470.62, 167,633.62 and 70,479.50 is: 97,264.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,470.62 : 167,633.62 = 70,479.50 : x
  2. Step 2: Convert to fraction form
    121,470.62/167,633.62 = 70,479.50/x
  3. Step 3: Cross multiply
    121,470.62x = 167,633.62 × 70,479.50
  4. Step 4: Simplify right side
    121,470.62x = 11,814,732,706.42
  5. Step 5: Solve for x
    x = 11,814,732,706.42/121,470.62
  6. Step 6: Final answer
    x = 97,264.12

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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.