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Finding the Fourth Proportional to 92,019.78, 126,991.80 and 51,746.22

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Solution

The fourth proportional to 92,019.78, 126,991.80 and 51,746.22 is: 71,412.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,019.78 : 126,991.80 = 51,746.22 : x
  2. Step 2: Convert to fraction form
    92,019.78/126,991.80 = 51,746.22/x
  3. Step 3: Cross multiply
    92,019.78x = 126,991.80 × 51,746.22
  4. Step 4: Simplify right side
    92,019.78x = 6,571,345,621.00
  5. Step 5: Solve for x
    x = 6,571,345,621.00/92,019.78
  6. Step 6: Final answer
    x = 71,412.32

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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.