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Finding the Fourth Proportional to 136,213.76, 187,868.48 and 88,482.48

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Solution

The fourth proportional to 136,213.76, 187,868.48 and 88,482.48 is: 122,036.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,213.76 : 187,868.48 = 88,482.48 : x
  2. Step 2: Convert to fraction form
    136,213.76/187,868.48 = 88,482.48/x
  3. Step 3: Cross multiply
    136,213.76x = 187,868.48 × 88,482.48
  4. Step 4: Simplify right side
    136,213.76x = 16,623,068,581.82
  5. Step 5: Solve for x
    x = 16,623,068,581.82/136,213.76
  6. Step 6: Final answer
    x = 122,036.64

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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.