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Finding the Fourth Proportional to 98,461.64, 135,879.76 and 60,220.50

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Solution

The fourth proportional to 98,461.64, 135,879.76 and 60,220.50 is: 83,105.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,461.64 : 135,879.76 = 60,220.50 : x
  2. Step 2: Convert to fraction form
    98,461.64/135,879.76 = 60,220.50/x
  3. Step 3: Cross multiply
    98,461.64x = 135,879.76 × 60,220.50
  4. Step 4: Simplify right side
    98,461.64x = 8,182,746,859.63
  5. Step 5: Solve for x
    x = 8,182,746,859.63/98,461.64
  6. Step 6: Final answer
    x = 83,105.93

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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.