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Finding the Fourth Proportional to 571,319.04, 786,625.34 and 485,098.32

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Solution

The fourth proportional to 571,319.04, 786,625.34 and 485,098.32 is: 667,911.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,319.04 : 786,625.34 = 485,098.32 : x
  2. Step 2: Convert to fraction form
    571,319.04/786,625.34 = 485,098.32/x
  3. Step 3: Cross multiply
    571,319.04x = 786,625.34 × 485,098.32
  4. Step 4: Simplify right side
    571,319.04x = 381,590,630,903.43
  5. Step 5: Solve for x
    x = 381,590,630,903.43/571,319.04
  6. Step 6: Final answer
    x = 667,911.63

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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.