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Finding the Fourth Proportional to 59,346.90, 81,891.45 and 47,278.12

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Solution

The fourth proportional to 59,346.90, 81,891.45 and 47,278.12 is: 65,238.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,346.90 : 81,891.45 = 47,278.12 : x
  2. Step 2: Convert to fraction form
    59,346.90/81,891.45 = 47,278.12/x
  3. Step 3: Cross multiply
    59,346.90x = 81,891.45 × 47,278.12
  4. Step 4: Simplify right side
    59,346.90x = 3,871,673,800.07
  5. Step 5: Solve for x
    x = 3,871,673,800.07/59,346.90
  6. Step 6: Final answer
    x = 65,238.01

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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.