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Finding the Fourth Proportional to 66,292.60, 91,482.06 and 36,078.52

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Solution

The fourth proportional to 66,292.60, 91,482.06 and 36,078.52 is: 49,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,292.60 : 91,482.06 = 36,078.52 : x
  2. Step 2: Convert to fraction form
    66,292.60/91,482.06 = 36,078.52/x
  3. Step 3: Cross multiply
    66,292.60x = 91,482.06 × 36,078.52
  4. Step 4: Simplify right side
    66,292.60x = 3,300,537,331.35
  5. Step 5: Solve for x
    x = 3,300,537,331.35/66,292.60
  6. Step 6: Final answer
    x = 49,787.42

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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.