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Finding the Fourth Proportional to 90,370.98, 124,703.06 and 52,134.02

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Solution

The fourth proportional to 90,370.98, 124,703.06 and 52,134.02 is: 71,939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,370.98 : 124,703.06 = 52,134.02 : x
  2. Step 2: Convert to fraction form
    90,370.98/124,703.06 = 52,134.02/x
  3. Step 3: Cross multiply
    90,370.98x = 124,703.06 × 52,134.02
  4. Step 4: Simplify right side
    90,370.98x = 6,501,271,824.10
  5. Step 5: Solve for x
    x = 6,501,271,824.10/90,370.98
  6. Step 6: Final answer
    x = 71,939.82

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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.