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Finding the Fourth Proportional to 58,699.76, 88,011.36 and 38,648.57

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Solution

The fourth proportional to 58,699.76, 88,011.36 and 38,648.57 is: 57,947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,699.76 : 88,011.36 = 38,648.57 : x
  2. Step 2: Convert to fraction form
    58,699.76/88,011.36 = 38,648.57/x
  3. Step 3: Cross multiply
    58,699.76x = 88,011.36 × 38,648.57
  4. Step 4: Simplify right side
    58,699.76x = 3,401,512,767.70
  5. Step 5: Solve for x
    x = 3,401,512,767.70/58,699.76
  6. Step 6: Final answer
    x = 57,947.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.