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Finding the Fourth Proportional to 61,921.86, 85,455.18 and 35,065.50

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Solution

The fourth proportional to 61,921.86, 85,455.18 and 35,065.50 is: 48,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,921.86 : 85,455.18 = 35,065.50 : x
  2. Step 2: Convert to fraction form
    61,921.86/85,455.18 = 35,065.50/x
  3. Step 3: Cross multiply
    61,921.86x = 85,455.18 × 35,065.50
  4. Step 4: Simplify right side
    61,921.86x = 2,996,528,614.29
  5. Step 5: Solve for x
    x = 2,996,528,614.29/61,921.86
  6. Step 6: Final answer
    x = 48,392.10

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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.