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Finding the Fourth Proportional to 520,540.04, 718,315.44 and 287,953.10

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Solution

The fourth proportional to 520,540.04, 718,315.44 and 287,953.10 is: 397,358.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,540.04 : 718,315.44 = 287,953.10 : x
  2. Step 2: Convert to fraction form
    520,540.04/718,315.44 = 287,953.10/x
  3. Step 3: Cross multiply
    520,540.04x = 718,315.44 × 287,953.10
  4. Step 4: Simplify right side
    520,540.04x = 206,841,157,725.86
  5. Step 5: Solve for x
    x = 206,841,157,725.86/520,540.04
  6. Step 6: Final answer
    x = 397,358.78

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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.