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Finding the Fourth Proportional to 66,721.83, 99,972.03 and 46,958.87

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Solution

The fourth proportional to 66,721.83, 99,972.03 and 46,958.87 is: 70,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.83 : 99,972.03 = 46,958.87 : x
  2. Step 2: Convert to fraction form
    66,721.83/99,972.03 = 46,958.87/x
  3. Step 3: Cross multiply
    66,721.83x = 99,972.03 × 46,958.87
  4. Step 4: Simplify right side
    66,721.83x = 4,694,573,722.29
  5. Step 5: Solve for x
    x = 4,694,573,722.29/66,721.83
  6. Step 6: Final answer
    x = 70,360.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.