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Finding the Fourth Proportional to 61,805.62, 85,260.36 and 39,106.36

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Solution

The fourth proportional to 61,805.62, 85,260.36 and 39,106.36 is: 53,946.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,805.62 : 85,260.36 = 39,106.36 : x
  2. Step 2: Convert to fraction form
    61,805.62/85,260.36 = 39,106.36/x
  3. Step 3: Cross multiply
    61,805.62x = 85,260.36 × 39,106.36
  4. Step 4: Simplify right side
    61,805.62x = 3,334,222,331.89
  5. Step 5: Solve for x
    x = 3,334,222,331.89/61,805.62
  6. Step 6: Final answer
    x = 53,946.91

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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.