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Finding the Fourth Proportional to 70,079.43, 105,133.02 and 25,706.57

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Solution

The fourth proportional to 70,079.43, 105,133.02 and 25,706.57 is: 38,564.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,079.43 : 105,133.02 = 25,706.57 : x
  2. Step 2: Convert to fraction form
    70,079.43/105,133.02 = 25,706.57/x
  3. Step 3: Cross multiply
    70,079.43x = 105,133.02 × 25,706.57
  4. Step 4: Simplify right side
    70,079.43x = 2,702,609,075.11
  5. Step 5: Solve for x
    x = 2,702,609,075.11/70,079.43
  6. Step 6: Final answer
    x = 38,564.94

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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.