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Finding the Fourth Proportional to 70,809.13, 97,705.16 and 40,588.89

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Solution

The fourth proportional to 70,809.13, 97,705.16 and 40,588.89 is: 56,006.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,809.13 : 97,705.16 = 40,588.89 : x
  2. Step 2: Convert to fraction form
    70,809.13/97,705.16 = 40,588.89/x
  3. Step 3: Cross multiply
    70,809.13x = 97,705.16 × 40,588.89
  4. Step 4: Simplify right side
    70,809.13x = 3,965,743,991.67
  5. Step 5: Solve for x
    x = 3,965,743,991.67/70,809.13
  6. Step 6: Final answer
    x = 56,006.11

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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.