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Finding the Fourth Proportional to 108,453.54, 149,661.54 and 60,711.60

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Solution

The fourth proportional to 108,453.54, 149,661.54 and 60,711.60 is: 83,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,453.54 : 149,661.54 = 60,711.60 : x
  2. Step 2: Convert to fraction form
    108,453.54/149,661.54 = 60,711.60/x
  3. Step 3: Cross multiply
    108,453.54x = 149,661.54 × 60,711.60
  4. Step 4: Simplify right side
    108,453.54x = 9,086,191,551.86
  5. Step 5: Solve for x
    x = 9,086,191,551.86/108,453.54
  6. Step 6: Final answer
    x = 83,779.58

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1.5x scale

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.