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Finding the Fourth Proportional to 107,925.40, 161,888.10 and 68,656.60

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Solution

The fourth proportional to 107,925.40, 161,888.10 and 68,656.60 is: 102,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,925.40 : 161,888.10 = 68,656.60 : x
  2. Step 2: Convert to fraction form
    107,925.40/161,888.10 = 68,656.60/x
  3. Step 3: Cross multiply
    107,925.40x = 161,888.10 × 68,656.60
  4. Step 4: Simplify right side
    107,925.40x = 11,114,686,526.46
  5. Step 5: Solve for x
    x = 11,114,686,526.46/107,925.40
  6. Step 6: Final answer
    x = 102,984.90

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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.