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Finding the Fourth Proportional to 65,595.15, 90,564.08 and 50,459.90

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Solution

The fourth proportional to 65,595.15, 90,564.08 and 50,459.90 is: 69,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,595.15 : 90,564.08 = 50,459.90 : x
  2. Step 2: Convert to fraction form
    65,595.15/90,564.08 = 50,459.90/x
  3. Step 3: Cross multiply
    65,595.15x = 90,564.08 × 50,459.90
  4. Step 4: Simplify right side
    65,595.15x = 4,569,853,715.27
  5. Step 5: Solve for x
    x = 4,569,853,715.27/65,595.15
  6. Step 6: Final answer
    x = 69,667.55

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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.