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Finding the Fourth Proportional to 121,937.65, 183,820.42 and 113,809.30

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Solution

The fourth proportional to 121,937.65, 183,820.42 and 113,809.30 is: 171,566.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,937.65 : 183,820.42 = 113,809.30 : x
  2. Step 2: Convert to fraction form
    121,937.65/183,820.42 = 113,809.30/x
  3. Step 3: Cross multiply
    121,937.65x = 183,820.42 × 113,809.30
  4. Step 4: Simplify right side
    121,937.65x = 20,920,473,008.62
  5. Step 5: Solve for x
    x = 20,920,473,008.62/121,937.65
  6. Step 6: Final answer
    x = 171,566.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.