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Finding the Fourth Proportional to 92,892.88, 128,231.38 and 62,719.04

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Solution

The fourth proportional to 92,892.88, 128,231.38 and 62,719.04 is: 86,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,892.88 : 128,231.38 = 62,719.04 : x
  2. Step 2: Convert to fraction form
    92,892.88/128,231.38 = 62,719.04/x
  3. Step 3: Cross multiply
    92,892.88x = 128,231.38 × 62,719.04
  4. Step 4: Simplify right side
    92,892.88x = 8,042,549,051.48
  5. Step 5: Solve for x
    x = 8,042,549,051.48/92,892.88
  6. Step 6: Final answer
    x = 86,578.75

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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.