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Finding the Fourth Proportional to 70,920.04, 97,880.52 and 53,896.60

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Solution

The fourth proportional to 70,920.04, 97,880.52 and 53,896.60 is: 74,385.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,920.04 : 97,880.52 = 53,896.60 : x
  2. Step 2: Convert to fraction form
    70,920.04/97,880.52 = 53,896.60/x
  3. Step 3: Cross multiply
    70,920.04x = 97,880.52 × 53,896.60
  4. Step 4: Simplify right side
    70,920.04x = 5,275,427,234.23
  5. Step 5: Solve for x
    x = 5,275,427,234.23/70,920.04
  6. Step 6: Final answer
    x = 74,385.56

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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.