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Finding the Fourth Proportional to 98,868, 148,177.60 and 70,641.12

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Solution

The fourth proportional to 98,868, 148,177.60 and 70,641.12 is: 105,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,868 : 148,177.60 = 70,641.12 : x
  2. Step 2: Convert to fraction form
    98,868/148,177.60 = 70,641.12/x
  3. Step 3: Cross multiply
    98,868x = 148,177.60 × 70,641.12
  4. Step 4: Simplify right side
    98,868x = 10,467,431,622.91
  5. Step 5: Solve for x
    x = 10,467,431,622.91/98,868
  6. Step 6: Final answer
    x = 105,872.80

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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.