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Finding the Fourth Proportional to 513,476.55, 708,543.11 and 283,997.37

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Solution

The fourth proportional to 513,476.55, 708,543.11 and 283,997.37 is: 391,886.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,476.55 : 708,543.11 = 283,997.37 : x
  2. Step 2: Convert to fraction form
    513,476.55/708,543.11 = 283,997.37/x
  3. Step 3: Cross multiply
    513,476.55x = 708,543.11 × 283,997.37
  4. Step 4: Simplify right side
    513,476.55x = 201,224,378,351.63
  5. Step 5: Solve for x
    x = 201,224,378,351.63/513,476.55
  6. Step 6: Final answer
    x = 391,886.21

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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.