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Finding the Fourth Proportional to 517,354.12, 713,941.38 and 290,999.56

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Solution

The fourth proportional to 517,354.12, 713,941.38 and 290,999.56 is: 401,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,354.12 : 713,941.38 = 290,999.56 : x
  2. Step 2: Convert to fraction form
    517,354.12/713,941.38 = 290,999.56/x
  3. Step 3: Cross multiply
    517,354.12x = 713,941.38 × 290,999.56
  4. Step 4: Simplify right side
    517,354.12x = 207,756,627,445.79
  5. Step 5: Solve for x
    x = 207,756,627,445.79/517,354.12
  6. Step 6: Final answer
    x = 401,575.28

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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.