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Finding the Fourth Proportional to 98,966.45, 136,591.98 and 56,524.98

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Solution

The fourth proportional to 98,966.45, 136,591.98 and 56,524.98 is: 78,014.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,966.45 : 136,591.98 = 56,524.98 : x
  2. Step 2: Convert to fraction form
    98,966.45/136,591.98 = 56,524.98/x
  3. Step 3: Cross multiply
    98,966.45x = 136,591.98 × 56,524.98
  4. Step 4: Simplify right side
    98,966.45x = 7,720,858,937.66
  5. Step 5: Solve for x
    x = 7,720,858,937.66/98,966.45
  6. Step 6: Final answer
    x = 78,014.91

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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.