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Finding the Fourth Proportional to 104,276.65, 156,411.94 and 25,389.74

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Solution

The fourth proportional to 104,276.65, 156,411.94 and 25,389.74 is: 38,083.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,276.65 : 156,411.94 = 25,389.74 : x
  2. Step 2: Convert to fraction form
    104,276.65/156,411.94 = 25,389.74/x
  3. Step 3: Cross multiply
    104,276.65x = 156,411.94 × 25,389.74
  4. Step 4: Simplify right side
    104,276.65x = 3,971,258,489.50
  5. Step 5: Solve for x
    x = 3,971,258,489.50/104,276.65
  6. Step 6: Final answer
    x = 38,083.87

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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.