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Finding the Fourth Proportional to 77,016.49, 106,278.95 and 43,018.21

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Solution

The fourth proportional to 77,016.49, 106,278.95 and 43,018.21 is: 59,363.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,016.49 : 106,278.95 = 43,018.21 : x
  2. Step 2: Convert to fraction form
    77,016.49/106,278.95 = 43,018.21/x
  3. Step 3: Cross multiply
    77,016.49x = 106,278.95 × 43,018.21
  4. Step 4: Simplify right side
    77,016.49x = 4,571,930,189.68
  5. Step 5: Solve for x
    x = 4,571,930,189.68/77,016.49
  6. Step 6: Final answer
    x = 59,363.00

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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.