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Finding the Fourth Proportional to 97,641.60, 146,462.40 and 74,313.60

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Solution

The fourth proportional to 97,641.60, 146,462.40 and 74,313.60 is: 111,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,641.60 : 146,462.40 = 74,313.60 : x
  2. Step 2: Convert to fraction form
    97,641.60/146,462.40 = 74,313.60/x
  3. Step 3: Cross multiply
    97,641.60x = 146,462.40 × 74,313.60
  4. Step 4: Simplify right side
    97,641.60x = 10,884,148,208.64
  5. Step 5: Solve for x
    x = 10,884,148,208.64/97,641.60
  6. Step 6: Final answer
    x = 111,470.40

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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.