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Finding the Fourth Proportional to 70,088.29, 96,721.19 and 43,220.05

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Solution

The fourth proportional to 70,088.29, 96,721.19 and 43,220.05 is: 59,643.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,088.29 : 96,721.19 = 43,220.05 : x
  2. Step 2: Convert to fraction form
    70,088.29/96,721.19 = 43,220.05/x
  3. Step 3: Cross multiply
    70,088.29x = 96,721.19 × 43,220.05
  4. Step 4: Simplify right side
    70,088.29x = 4,180,294,372.03
  5. Step 5: Solve for x
    x = 4,180,294,372.03/70,088.29
  6. Step 6: Final answer
    x = 59,643.27

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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.