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Finding the Fourth Proportional to 98,851.10, 148,276.65 and 48,938.90

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Solution

The fourth proportional to 98,851.10, 148,276.65 and 48,938.90 is: 73,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,851.10 : 148,276.65 = 48,938.90 : x
  2. Step 2: Convert to fraction form
    98,851.10/148,276.65 = 48,938.90/x
  3. Step 3: Cross multiply
    98,851.10x = 148,276.65 × 48,938.90
  4. Step 4: Simplify right side
    98,851.10x = 7,256,496,146.69
  5. Step 5: Solve for x
    x = 7,256,496,146.69/98,851.10
  6. Step 6: Final answer
    x = 73,408.35

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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.