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Finding the Fourth Proportional to 70,943.76, 97,853.16 and 57,515.52

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Solution

The fourth proportional to 70,943.76, 97,853.16 and 57,515.52 is: 79,331.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,943.76 : 97,853.16 = 57,515.52 : x
  2. Step 2: Convert to fraction form
    70,943.76/97,853.16 = 57,515.52/x
  3. Step 3: Cross multiply
    70,943.76x = 97,853.16 × 57,515.52
  4. Step 4: Simplify right side
    70,943.76x = 5,628,075,381.04
  5. Step 5: Solve for x
    x = 5,628,075,381.04/70,943.76
  6. Step 6: Final answer
    x = 79,331.51

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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.