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Finding the Fourth Proportional to 519,505.98, 716,911.23 and 290,066.82

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Solution

The fourth proportional to 519,505.98, 716,911.23 and 290,066.82 is: 400,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,505.98 : 716,911.23 = 290,066.82 : x
  2. Step 2: Convert to fraction form
    519,505.98/716,911.23 = 290,066.82/x
  3. Step 3: Cross multiply
    519,505.98x = 716,911.23 × 290,066.82
  4. Step 4: Simplify right side
    519,505.98x = 207,952,160,708.39
  5. Step 5: Solve for x
    x = 207,952,160,708.39/519,505.98
  6. Step 6: Final answer
    x = 400,288.29

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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.