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Finding the Fourth Proportional to 107,159.94, 147,873.48 and 61,839.80

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Solution

The fourth proportional to 107,159.94, 147,873.48 and 61,839.80 is: 85,334.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,159.94 : 147,873.48 = 61,839.80 : x
  2. Step 2: Convert to fraction form
    107,159.94/147,873.48 = 61,839.80/x
  3. Step 3: Cross multiply
    107,159.94x = 147,873.48 × 61,839.80
  4. Step 4: Simplify right side
    107,159.94x = 9,144,466,428.50
  5. Step 5: Solve for x
    x = 9,144,466,428.50/107,159.94
  6. Step 6: Final answer
    x = 85,334.75

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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.