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Finding the Fourth Proportional to 61,753.62, 85,188.69 and 39,054.36

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Solution

The fourth proportional to 61,753.62, 85,188.69 and 39,054.36 is: 53,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,753.62 : 85,188.69 = 39,054.36 : x
  2. Step 2: Convert to fraction form
    61,753.62/85,188.69 = 39,054.36/x
  3. Step 3: Cross multiply
    61,753.62x = 85,188.69 × 39,054.36
  4. Step 4: Simplify right side
    61,753.62x = 3,326,989,767.19
  5. Step 5: Solve for x
    x = 3,326,989,767.19/61,753.62
  6. Step 6: Final answer
    x = 53,875.22

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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.