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Finding the Fourth Proportional to 70,779.38, 97,673.42 and 38,948.26

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Solution

The fourth proportional to 70,779.38, 97,673.42 and 38,948.26 is: 53,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,779.38 : 97,673.42 = 38,948.26 : x
  2. Step 2: Convert to fraction form
    70,779.38/97,673.42 = 38,948.26/x
  3. Step 3: Cross multiply
    70,779.38x = 97,673.42 × 38,948.26
  4. Step 4: Simplify right side
    70,779.38x = 3,804,209,757.25
  5. Step 5: Solve for x
    x = 3,804,209,757.25/70,779.38
  6. Step 6: Final answer
    x = 53,747.43

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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.