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Finding the Fourth Proportional to 613,805.90, 920,846.21 and 187,379.62

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Solution

The fourth proportional to 613,805.90, 920,846.21 and 187,379.62 is: 281,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,805.90 : 920,846.21 = 187,379.62 : x
  2. Step 2: Convert to fraction form
    613,805.90/920,846.21 = 187,379.62/x
  3. Step 3: Cross multiply
    613,805.90x = 920,846.21 × 187,379.62
  4. Step 4: Simplify right side
    613,805.90x = 172,547,809,669.23
  5. Step 5: Solve for x
    x = 172,547,809,669.23/613,805.90
  6. Step 6: Final answer
    x = 281,111.36

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1.5x scale

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.