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Finding the Fourth Proportional to 78,904.79, 108,886.93 and 43,094.95

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Solution

The fourth proportional to 78,904.79, 108,886.93 and 43,094.95 is: 59,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,904.79 : 108,886.93 = 43,094.95 : x
  2. Step 2: Convert to fraction form
    78,904.79/108,886.93 = 43,094.95/x
  3. Step 3: Cross multiply
    78,904.79x = 108,886.93 × 43,094.95
  4. Step 4: Simplify right side
    78,904.79x = 4,692,476,259.57
  5. Step 5: Solve for x
    x = 4,692,476,259.57/78,904.79
  6. Step 6: Final answer
    x = 59,470.10

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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.