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Finding the Fourth Proportional to 85,089.44, 127,707.92 and 84,892.64

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Solution

The fourth proportional to 85,089.44, 127,707.92 and 84,892.64 is: 127,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,089.44 : 127,707.92 = 84,892.64 : x
  2. Step 2: Convert to fraction form
    85,089.44/127,707.92 = 84,892.64/x
  3. Step 3: Cross multiply
    85,089.44x = 127,707.92 × 84,892.64
  4. Step 4: Simplify right side
    85,089.44x = 10,841,462,477.71
  5. Step 5: Solve for x
    x = 10,841,462,477.71/85,089.44
  6. Step 6: Final answer
    x = 127,412.55

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1.5x scale

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.