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Finding the Fourth Proportional to 111,811.74, 154,265.51 and 64,055.86

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Solution

The fourth proportional to 111,811.74, 154,265.51 and 64,055.86 is: 88,377.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,811.74 : 154,265.51 = 64,055.86 : x
  2. Step 2: Convert to fraction form
    111,811.74/154,265.51 = 64,055.86/x
  3. Step 3: Cross multiply
    111,811.74x = 154,265.51 × 64,055.86
  4. Step 4: Simplify right side
    111,811.74x = 9,881,610,553.61
  5. Step 5: Solve for x
    x = 9,881,610,553.61/111,811.74
  6. Step 6: Final answer
    x = 88,377.22

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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.