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Finding the Fourth Proportional to 66,707.51, 100,061.27 and 31,628.03

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Solution

The fourth proportional to 66,707.51, 100,061.27 and 31,628.03 is: 47,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,707.51 : 100,061.27 = 31,628.03 : x
  2. Step 2: Convert to fraction form
    66,707.51/100,061.27 = 31,628.03/x
  3. Step 3: Cross multiply
    66,707.51x = 100,061.27 × 31,628.03
  4. Step 4: Simplify right side
    66,707.51x = 3,164,740,691.26
  5. Step 5: Solve for x
    x = 3,164,740,691.26/66,707.51
  6. Step 6: Final answer
    x = 47,442.05

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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.