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Finding the Fourth Proportional to 98,616.70, 147,946.65 and 48,720.70

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Solution

The fourth proportional to 98,616.70, 147,946.65 and 48,720.70 is: 73,091.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,616.70 : 147,946.65 = 48,720.70 : x
  2. Step 2: Convert to fraction form
    98,616.70/147,946.65 = 48,720.70/x
  3. Step 3: Cross multiply
    98,616.70x = 147,946.65 × 48,720.70
  4. Step 4: Simplify right side
    98,616.70x = 7,208,064,350.66
  5. Step 5: Solve for x
    x = 7,208,064,350.66/98,616.70
  6. Step 6: Final answer
    x = 73,091.72

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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.