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Finding the Fourth Proportional to 58,812.85, 81,143.83 and 33,315.16

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Solution

The fourth proportional to 58,812.85, 81,143.83 and 33,315.16 is: 45,964.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,812.85 : 81,143.83 = 33,315.16 : x
  2. Step 2: Convert to fraction form
    58,812.85/81,143.83 = 33,315.16/x
  3. Step 3: Cross multiply
    58,812.85x = 81,143.83 × 33,315.16
  4. Step 4: Simplify right side
    58,812.85x = 2,703,319,679.46
  5. Step 5: Solve for x
    x = 2,703,319,679.46/58,812.85
  6. Step 6: Final answer
    x = 45,964.78

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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.