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Finding the Fourth Proportional to 69,398.07, 103,604.11 and 66,937.69

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Solution

The fourth proportional to 69,398.07, 103,604.11 and 66,937.69 is: 99,931.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,398.07 : 103,604.11 = 66,937.69 : x
  2. Step 2: Convert to fraction form
    69,398.07/103,604.11 = 66,937.69/x
  3. Step 3: Cross multiply
    69,398.07x = 103,604.11 × 66,937.69
  4. Step 4: Simplify right side
    69,398.07x = 6,935,020,136.59
  5. Step 5: Solve for x
    x = 6,935,020,136.59/69,398.07
  6. Step 6: Final answer
    x = 99,931.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.