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Finding the Fourth Proportional to 65,000.99, 89,701.97 and 38,143.95

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Solution

The fourth proportional to 65,000.99, 89,701.97 and 38,143.95 is: 52,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,000.99 : 89,701.97 = 38,143.95 : x
  2. Step 2: Convert to fraction form
    65,000.99/89,701.97 = 38,143.95/x
  3. Step 3: Cross multiply
    65,000.99x = 89,701.97 × 38,143.95
  4. Step 4: Simplify right side
    65,000.99x = 3,421,587,458.58
  5. Step 5: Solve for x
    x = 3,421,587,458.58/65,000.99
  6. Step 6: Final answer
    x = 52,639.01

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1.5x scale

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.