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Finding the Fourth Proportional to 98,938.32, 136,532.48 and 53,614.32

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Solution

The fourth proportional to 98,938.32, 136,532.48 and 53,614.32 is: 73,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,938.32 : 136,532.48 = 53,614.32 : x
  2. Step 2: Convert to fraction form
    98,938.32/136,532.48 = 53,614.32/x
  3. Step 3: Cross multiply
    98,938.32x = 136,532.48 × 53,614.32
  4. Step 4: Simplify right side
    98,938.32x = 7,320,096,073.11
  5. Step 5: Solve for x
    x = 7,320,096,073.11/98,938.32
  6. Step 6: Final answer
    x = 73,986.46

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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.