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Finding the Fourth Proportional to 107,041.87, 147,650.95 and 68,851.18

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Solution

The fourth proportional to 107,041.87, 147,650.95 and 68,851.18 is: 94,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,041.87 : 147,650.95 = 68,851.18 : x
  2. Step 2: Convert to fraction form
    107,041.87/147,650.95 = 68,851.18/x
  3. Step 3: Cross multiply
    107,041.87x = 147,650.95 × 68,851.18
  4. Step 4: Simplify right side
    107,041.87x = 10,165,942,406.25
  5. Step 5: Solve for x
    x = 10,165,942,406.25/107,041.87
  6. Step 6: Final answer
    x = 94,971.64

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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.