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Finding the Fourth Proportional to 63,085.68, 94,643.52 and 18,712.80

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Solution

The fourth proportional to 63,085.68, 94,643.52 and 18,712.80 is: 28,073.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,085.68 : 94,643.52 = 18,712.80 : x
  2. Step 2: Convert to fraction form
    63,085.68/94,643.52 = 18,712.80/x
  3. Step 3: Cross multiply
    63,085.68x = 94,643.52 × 18,712.80
  4. Step 4: Simplify right side
    63,085.68x = 1,771,045,261.06
  5. Step 5: Solve for x
    x = 1,771,045,261.06/63,085.68
  6. Step 6: Final answer
    x = 28,073.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.