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Finding the Fourth Proportional to 65,337.64, 89,623.45 and 64,775.40

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Solution

The fourth proportional to 65,337.64, 89,623.45 and 64,775.40 is: 88,852.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,337.64 : 89,623.45 = 64,775.40 : x
  2. Step 2: Convert to fraction form
    65,337.64/89,623.45 = 64,775.40/x
  3. Step 3: Cross multiply
    65,337.64x = 89,623.45 × 64,775.40
  4. Step 4: Simplify right side
    65,337.64x = 5,805,394,823.13
  5. Step 5: Solve for x
    x = 5,805,394,823.13/65,337.64
  6. Step 6: Final answer
    x = 88,852.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.