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Finding the Fourth Proportional to 105,894.32, 145,669.80 and 88,573.52

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Solution

The fourth proportional to 105,894.32, 145,669.80 and 88,573.52 is: 121,843.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,894.32 : 145,669.80 = 88,573.52 : x
  2. Step 2: Convert to fraction form
    105,894.32/145,669.80 = 88,573.52/x
  3. Step 3: Cross multiply
    105,894.32x = 145,669.80 × 88,573.52
  4. Step 4: Simplify right side
    105,894.32x = 12,902,486,943.70
  5. Step 5: Solve for x
    x = 12,902,486,943.70/105,894.32
  6. Step 6: Final answer
    x = 121,843.05

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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.