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Finding the Fourth Proportional to 61,859.52, 85,309.74 and 52,319.43

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Solution

The fourth proportional to 61,859.52, 85,309.74 and 52,319.43 is: 72,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,859.52 : 85,309.74 = 52,319.43 : x
  2. Step 2: Convert to fraction form
    61,859.52/85,309.74 = 52,319.43/x
  3. Step 3: Cross multiply
    61,859.52x = 85,309.74 × 52,319.43
  4. Step 4: Simplify right side
    61,859.52x = 4,463,356,970.25
  5. Step 5: Solve for x
    x = 4,463,356,970.25/61,859.52
  6. Step 6: Final answer
    x = 72,153.11

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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.