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Finding the Fourth Proportional to 64,887.34, 89,553.12 and 38,040.40

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Solution

The fourth proportional to 64,887.34, 89,553.12 and 38,040.40 is: 52,500.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,887.34 : 89,553.12 = 38,040.40 : x
  2. Step 2: Convert to fraction form
    64,887.34/89,553.12 = 38,040.40/x
  3. Step 3: Cross multiply
    64,887.34x = 89,553.12 × 38,040.40
  4. Step 4: Simplify right side
    64,887.34x = 3,406,636,506.05
  5. Step 5: Solve for x
    x = 3,406,636,506.05/64,887.34
  6. Step 6: Final answer
    x = 52,500.79

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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.