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Finding the Fourth Proportional to 57,814.71, 86,721.15 and 31,173.10

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Solution

The fourth proportional to 57,814.71, 86,721.15 and 31,173.10 is: 46,759.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,814.71 : 86,721.15 = 31,173.10 : x
  2. Step 2: Convert to fraction form
    57,814.71/86,721.15 = 31,173.10/x
  3. Step 3: Cross multiply
    57,814.71x = 86,721.15 × 31,173.10
  4. Step 4: Simplify right side
    57,814.71x = 2,703,367,081.07
  5. Step 5: Solve for x
    x = 2,703,367,081.07/57,814.71
  6. Step 6: Final answer
    x = 46,759.16

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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.