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Finding the Fourth Proportional to 92,907.90, 128,252.16 and 62,734.08

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Solution

The fourth proportional to 92,907.90, 128,252.16 and 62,734.08 is: 86,599.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,907.90 : 128,252.16 = 62,734.08 : x
  2. Step 2: Convert to fraction form
    92,907.90/128,252.16 = 62,734.08/x
  3. Step 3: Cross multiply
    92,907.90x = 128,252.16 × 62,734.08
  4. Step 4: Simplify right side
    92,907.90x = 8,045,781,265.61
  5. Step 5: Solve for x
    x = 8,045,781,265.61/92,907.90
  6. Step 6: Final answer
    x = 86,599.54

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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.