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Finding the Fourth Proportional to 79,065.99, 109,116.99 and 45,075.33

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Solution

The fourth proportional to 79,065.99, 109,116.99 and 45,075.33 is: 62,207.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,065.99 : 109,116.99 = 45,075.33 : x
  2. Step 2: Convert to fraction form
    79,065.99/109,116.99 = 45,075.33/x
  3. Step 3: Cross multiply
    79,065.99x = 109,116.99 × 45,075.33
  4. Step 4: Simplify right side
    79,065.99x = 4,918,484,332.86
  5. Step 5: Solve for x
    x = 4,918,484,332.86/79,065.99
  6. Step 6: Final answer
    x = 62,207.33

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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.