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Finding the Fourth Proportional to 526,805.83, 726,992.01 and 285,088.40

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Solution

The fourth proportional to 526,805.83, 726,992.01 and 285,088.40 is: 393,421.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,805.83 : 726,992.01 = 285,088.40 : x
  2. Step 2: Convert to fraction form
    526,805.83/726,992.01 = 285,088.40/x
  3. Step 3: Cross multiply
    526,805.83x = 726,992.01 × 285,088.40
  4. Step 4: Simplify right side
    526,805.83x = 207,256,988,943.68
  5. Step 5: Solve for x
    x = 207,256,988,943.68/526,805.83
  6. Step 6: Final answer
    x = 393,421.97

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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.