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Finding the Fourth Proportional to 64,915.66, 89,584.28 and 38,058.90

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Solution

The fourth proportional to 64,915.66, 89,584.28 and 38,058.90 is: 52,521.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,915.66 : 89,584.28 = 38,058.90 : x
  2. Step 2: Convert to fraction form
    64,915.66/89,584.28 = 38,058.90/x
  3. Step 3: Cross multiply
    64,915.66x = 89,584.28 × 38,058.90
  4. Step 4: Simplify right side
    64,915.66x = 3,409,479,154.09
  5. Step 5: Solve for x
    x = 3,409,479,154.09/64,915.66
  6. Step 6: Final answer
    x = 52,521.67

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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.