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Finding the Fourth Proportional to 98,744.70, 148,117.05 and 91,746.30

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Solution

The fourth proportional to 98,744.70, 148,117.05 and 91,746.30 is: 137,619.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,744.70 : 148,117.05 = 91,746.30 : x
  2. Step 2: Convert to fraction form
    98,744.70/148,117.05 = 91,746.30/x
  3. Step 3: Cross multiply
    98,744.70x = 148,117.05 × 91,746.30
  4. Step 4: Simplify right side
    98,744.70x = 13,589,191,304.42
  5. Step 5: Solve for x
    x = 13,589,191,304.42/98,744.70
  6. Step 6: Final answer
    x = 137,619.45

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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.