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Finding the Fourth Proportional to 108,788.16, 150,127.92 and 61,041.60

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Solution

The fourth proportional to 108,788.16, 150,127.92 and 61,041.60 is: 84,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,788.16 : 150,127.92 = 61,041.60 : x
  2. Step 2: Convert to fraction form
    108,788.16/150,127.92 = 61,041.60/x
  3. Step 3: Cross multiply
    108,788.16x = 150,127.92 × 61,041.60
  4. Step 4: Simplify right side
    108,788.16x = 9,164,048,441.47
  5. Step 5: Solve for x
    x = 9,164,048,441.47/108,788.16
  6. Step 6: Final answer
    x = 84,237.55

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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.