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Finding the Fourth Proportional to 121,097.60, 181,646.40 and 113,224.40

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Solution

The fourth proportional to 121,097.60, 181,646.40 and 113,224.40 is: 169,836.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,097.60 : 181,646.40 = 113,224.40 : x
  2. Step 2: Convert to fraction form
    121,097.60/181,646.40 = 113,224.40/x
  3. Step 3: Cross multiply
    121,097.60x = 181,646.40 × 113,224.40
  4. Step 4: Simplify right side
    121,097.60x = 20,566,804,652.16
  5. Step 5: Solve for x
    x = 20,566,804,652.16/121,097.60
  6. Step 6: Final answer
    x = 169,836.60

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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.