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Finding the Fourth Proportional to 61,243.68, 84,509.74 and 34,389.12

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Solution

The fourth proportional to 61,243.68, 84,509.74 and 34,389.12 is: 47,453.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,243.68 : 84,509.74 = 34,389.12 : x
  2. Step 2: Convert to fraction form
    61,243.68/84,509.74 = 34,389.12/x
  3. Step 3: Cross multiply
    61,243.68x = 84,509.74 × 34,389.12
  4. Step 4: Simplify right side
    61,243.68x = 2,906,215,590.03
  5. Step 5: Solve for x
    x = 2,906,215,590.03/61,243.68
  6. Step 6: Final answer
    x = 47,453.31

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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.