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Finding the Fourth Proportional to 70,726.90, 97,005.12 and 62,755.28

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Solution

The fourth proportional to 70,726.90, 97,005.12 and 62,755.28 is: 86,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,726.90 : 97,005.12 = 62,755.28 : x
  2. Step 2: Convert to fraction form
    70,726.90/97,005.12 = 62,755.28/x
  3. Step 3: Cross multiply
    70,726.90x = 97,005.12 × 62,755.28
  4. Step 4: Simplify right side
    70,726.90x = 6,087,583,467.03
  5. Step 5: Solve for x
    x = 6,087,583,467.03/70,726.90
  6. Step 6: Final answer
    x = 86,071.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.