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Finding the Fourth Proportional to 98,909.96, 136,494.63 and 53,586.81

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Solution

The fourth proportional to 98,909.96, 136,494.63 and 53,586.81 is: 73,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,909.96 : 136,494.63 = 53,586.81 : x
  2. Step 2: Convert to fraction form
    98,909.96/136,494.63 = 53,586.81/x
  3. Step 3: Cross multiply
    98,909.96x = 136,494.63 × 53,586.81
  4. Step 4: Simplify right side
    98,909.96x = 7,314,311,803.83
  5. Step 5: Solve for x
    x = 7,314,311,803.83/98,909.96
  6. Step 6: Final answer
    x = 73,949.20

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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.