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Finding the Fourth Proportional to 118,791.61, 163,886.75 and 67,807.17

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Solution

The fourth proportional to 118,791.61, 163,886.75 and 67,807.17 is: 93,547.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,791.61 : 163,886.75 = 67,807.17 : x
  2. Step 2: Convert to fraction form
    118,791.61/163,886.75 = 67,807.17/x
  3. Step 3: Cross multiply
    118,791.61x = 163,886.75 × 67,807.17
  4. Step 4: Simplify right side
    118,791.61x = 11,112,696,718.00
  5. Step 5: Solve for x
    x = 11,112,696,718.00/118,791.61
  6. Step 6: Final answer
    x = 93,547.82

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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.