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Finding the Fourth Proportional to 61,615.48, 85,029.18 and 33,321.16

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Solution

The fourth proportional to 61,615.48, 85,029.18 and 33,321.16 is: 45,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,615.48 : 85,029.18 = 33,321.16 : x
  2. Step 2: Convert to fraction form
    61,615.48/85,029.18 = 33,321.16/x
  3. Step 3: Cross multiply
    61,615.48x = 85,029.18 × 33,321.16
  4. Step 4: Simplify right side
    61,615.48x = 2,833,270,911.45
  5. Step 5: Solve for x
    x = 2,833,270,911.45/61,615.48
  6. Step 6: Final answer
    x = 45,983.10

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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.