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Finding the Fourth Proportional to 160,713.11, 221,787.11 and 88,111.19

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Solution

The fourth proportional to 160,713.11, 221,787.11 and 88,111.19 is: 121,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,713.11 : 221,787.11 = 88,111.19 : x
  2. Step 2: Convert to fraction form
    160,713.11/221,787.11 = 88,111.19/x
  3. Step 3: Cross multiply
    160,713.11x = 221,787.11 × 88,111.19
  4. Step 4: Simplify right side
    160,713.11x = 19,541,926,963.51
  5. Step 5: Solve for x
    x = 19,541,926,963.51/160,713.11
  6. Step 6: Final answer
    x = 121,595.10

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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.