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Finding the Fourth Proportional to 98,552.69, 147,934.28 and 42,420.60

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Solution

The fourth proportional to 98,552.69, 147,934.28 and 42,420.60 is: 63,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,552.69 : 147,934.28 = 42,420.60 : x
  2. Step 2: Convert to fraction form
    98,552.69/147,934.28 = 42,420.60/x
  3. Step 3: Cross multiply
    98,552.69x = 147,934.28 × 42,420.60
  4. Step 4: Simplify right side
    98,552.69x = 6,275,460,918.17
  5. Step 5: Solve for x
    x = 6,275,460,918.17/98,552.69
  6. Step 6: Final answer
    x = 63,676.20

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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.