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Finding the Fourth Proportional to 517,014.27, 713,462.57 and 287,565.07

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Solution

The fourth proportional to 517,014.27, 713,462.57 and 287,565.07 is: 396,830.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,014.27 : 713,462.57 = 287,565.07 : x
  2. Step 2: Convert to fraction form
    517,014.27/713,462.57 = 287,565.07/x
  3. Step 3: Cross multiply
    517,014.27x = 713,462.57 × 287,565.07
  4. Step 4: Simplify right side
    517,014.27x = 205,166,910,662.95
  5. Step 5: Solve for x
    x = 205,166,910,662.95/517,014.27
  6. Step 6: Final answer
    x = 396,830.27

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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.