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Finding the Fourth Proportional to 69,888.49, 96,445.16 and 39,673.55

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Solution

The fourth proportional to 69,888.49, 96,445.16 and 39,673.55 is: 54,748.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,888.49 : 96,445.16 = 39,673.55 : x
  2. Step 2: Convert to fraction form
    69,888.49/96,445.16 = 39,673.55/x
  3. Step 3: Cross multiply
    69,888.49x = 96,445.16 × 39,673.55
  4. Step 4: Simplify right side
    69,888.49x = 3,826,321,666.01
  5. Step 5: Solve for x
    x = 3,826,321,666.01/69,888.49
  6. Step 6: Final answer
    x = 54,748.95

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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.