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Finding the Fourth Proportional to 652,374.10, 978,561.15 and 413,225.65

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Solution

The fourth proportional to 652,374.10, 978,561.15 and 413,225.65 is: 619,838.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,374.10 : 978,561.15 = 413,225.65 : x
  2. Step 2: Convert to fraction form
    652,374.10/978,561.15 = 413,225.65/x
  3. Step 3: Cross multiply
    652,374.10x = 978,561.15 × 413,225.65
  4. Step 4: Simplify right side
    652,374.10x = 404,366,567,273.50
  5. Step 5: Solve for x
    x = 404,366,567,273.50/652,374.10
  6. Step 6: Final answer
    x = 619,838.48

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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.