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Finding the Fourth Proportional to 107,614.40, 161,421.60 and 103,313.60

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Solution

The fourth proportional to 107,614.40, 161,421.60 and 103,313.60 is: 154,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,614.40 : 161,421.60 = 103,313.60 : x
  2. Step 2: Convert to fraction form
    107,614.40/161,421.60 = 103,313.60/x
  3. Step 3: Cross multiply
    107,614.40x = 161,421.60 × 103,313.60
  4. Step 4: Simplify right side
    107,614.40x = 16,677,046,613.76
  5. Step 5: Solve for x
    x = 16,677,046,613.76/107,614.40
  6. Step 6: Final answer
    x = 154,970.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.