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Finding the Fourth Proportional to 69,088.28, 103,417.90 and 37,419.69

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Solution

The fourth proportional to 69,088.28, 103,417.90 and 37,419.69 is: 56,013.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,088.28 : 103,417.90 = 37,419.69 : x
  2. Step 2: Convert to fraction form
    69,088.28/103,417.90 = 37,419.69/x
  3. Step 3: Cross multiply
    69,088.28x = 103,417.90 × 37,419.69
  4. Step 4: Simplify right side
    69,088.28x = 3,869,865,277.08
  5. Step 5: Solve for x
    x = 3,869,865,277.08/69,088.28
  6. Step 6: Final answer
    x = 56,013.34

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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.