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Finding the Fourth Proportional to 91,447.84, 137,401.80 and 58,182.76

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Solution

The fourth proportional to 91,447.84, 137,401.80 and 58,182.76 is: 87,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,447.84 : 137,401.80 = 58,182.76 : x
  2. Step 2: Convert to fraction form
    91,447.84/137,401.80 = 58,182.76/x
  3. Step 3: Cross multiply
    91,447.84x = 137,401.80 × 58,182.76
  4. Step 4: Simplify right side
    91,447.84x = 7,994,415,952.97
  5. Step 5: Solve for x
    x = 7,994,415,952.97/91,447.84
  6. Step 6: Final answer
    x = 87,420.50

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1.5x scale

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.