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Finding the Fourth Proportional to 521,243.25, 719,310.83 and 294,888.75

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Solution

The fourth proportional to 521,243.25, 719,310.83 and 294,888.75 is: 406,943.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,243.25 : 719,310.83 = 294,888.75 : x
  2. Step 2: Convert to fraction form
    521,243.25/719,310.83 = 294,888.75/x
  3. Step 3: Cross multiply
    521,243.25x = 719,310.83 × 294,888.75
  4. Step 4: Simplify right side
    521,243.25x = 212,116,670,045.72
  5. Step 5: Solve for x
    x = 212,116,670,045.72/521,243.25
  6. Step 6: Final answer
    x = 406,943.73

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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.