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Finding the Fourth Proportional to 64,622.39, 89,246.88 and 57,577.95

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Solution

The fourth proportional to 64,622.39, 89,246.88 and 57,577.95 is: 79,518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,622.39 : 89,246.88 = 57,577.95 : x
  2. Step 2: Convert to fraction form
    64,622.39/89,246.88 = 57,577.95/x
  3. Step 3: Cross multiply
    64,622.39x = 89,246.88 × 57,577.95
  4. Step 4: Simplify right side
    64,622.39x = 5,138,652,394.30
  5. Step 5: Solve for x
    x = 5,138,652,394.30/64,622.39
  6. Step 6: Final answer
    x = 79,518.15

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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.