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Finding the Fourth Proportional to 65,167.99, 97,821.11 and 57,719.90

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Solution

The fourth proportional to 65,167.99, 97,821.11 and 57,719.90 is: 86,641.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,167.99 : 97,821.11 = 57,719.90 : x
  2. Step 2: Convert to fraction form
    65,167.99/97,821.11 = 57,719.90/x
  3. Step 3: Cross multiply
    65,167.99x = 97,821.11 × 57,719.90
  4. Step 4: Simplify right side
    65,167.99x = 5,646,225,075.94
  5. Step 5: Solve for x
    x = 5,646,225,075.94/65,167.99
  6. Step 6: Final answer
    x = 86,641.08

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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.