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Finding the Fourth Proportional to 101,224.98, 139,690.49 and 56,512.98

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Solution

The fourth proportional to 101,224.98, 139,690.49 and 56,512.98 is: 77,987.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,224.98 : 139,690.49 = 56,512.98 : x
  2. Step 2: Convert to fraction form
    101,224.98/139,690.49 = 56,512.98/x
  3. Step 3: Cross multiply
    101,224.98x = 139,690.49 × 56,512.98
  4. Step 4: Simplify right side
    101,224.98x = 7,894,325,585.00
  5. Step 5: Solve for x
    x = 7,894,325,585.00/101,224.98
  6. Step 6: Final answer
    x = 77,987.92

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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.