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Finding the Fourth Proportional to 61,596.86, 85,016.86 and 38,921.45

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Solution

The fourth proportional to 61,596.86, 85,016.86 and 38,921.45 is: 53,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,596.86 : 85,016.86 = 38,921.45 : x
  2. Step 2: Convert to fraction form
    61,596.86/85,016.86 = 38,921.45/x
  3. Step 3: Cross multiply
    61,596.86x = 85,016.86 × 38,921.45
  4. Step 4: Simplify right side
    61,596.86x = 3,308,978,943.26
  5. Step 5: Solve for x
    x = 3,308,978,943.26/61,596.86
  6. Step 6: Final answer
    x = 53,719.93

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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.