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Finding the Fourth Proportional to 371,725.65, 557,609.72 and 105,465.15

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Solution

The fourth proportional to 371,725.65, 557,609.72 and 105,465.15 is: 158,203.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,725.65 : 557,609.72 = 105,465.15 : x
  2. Step 2: Convert to fraction form
    371,725.65/557,609.72 = 105,465.15/x
  3. Step 3: Cross multiply
    371,725.65x = 557,609.72 × 105,465.15
  4. Step 4: Simplify right side
    371,725.65x = 58,808,392,233.93
  5. Step 5: Solve for x
    x = 58,808,392,233.93/371,725.65
  6. Step 6: Final answer
    x = 158,203.75

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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.