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Finding the Fourth Proportional to 521,807.90, 719,776.62 and 344,997.70

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Solution

The fourth proportional to 521,807.90, 719,776.62 and 344,997.70 is: 475,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,807.90 : 719,776.62 = 344,997.70 : x
  2. Step 2: Convert to fraction form
    521,807.90/719,776.62 = 344,997.70/x
  3. Step 3: Cross multiply
    521,807.90x = 719,776.62 × 344,997.70
  4. Step 4: Simplify right side
    521,807.90x = 248,321,278,413.77
  5. Step 5: Solve for x
    x = 248,321,278,413.77/521,807.90
  6. Step 6: Final answer
    x = 475,886.39

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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.