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Finding the Fourth Proportional to 691,992.76, 955,045.38 and 405,627.16

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Solution

The fourth proportional to 691,992.76, 955,045.38 and 405,627.16 is: 559,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,992.76 : 955,045.38 = 405,627.16 : x
  2. Step 2: Convert to fraction form
    691,992.76/955,045.38 = 405,627.16/x
  3. Step 3: Cross multiply
    691,992.76x = 955,045.38 × 405,627.16
  4. Step 4: Simplify right side
    691,992.76x = 387,392,345,160.52
  5. Step 5: Solve for x
    x = 387,392,345,160.52/691,992.76
  6. Step 6: Final answer
    x = 559,821.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.