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Finding the Fourth Proportional to 89,940.54, 124,132.60 and 53,646.60

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Solution

The fourth proportional to 89,940.54, 124,132.60 and 53,646.60 is: 74,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,940.54 : 124,132.60 = 53,646.60 : x
  2. Step 2: Convert to fraction form
    89,940.54/124,132.60 = 53,646.60/x
  3. Step 3: Cross multiply
    89,940.54x = 124,132.60 × 53,646.60
  4. Step 4: Simplify right side
    89,940.54x = 6,659,291,939.16
  5. Step 5: Solve for x
    x = 6,659,291,939.16/89,940.54
  6. Step 6: Final answer
    x = 74,041.05

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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.