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Finding the Fourth Proportional to 512,509.11, 768,837.15 and 157,552.89

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Solution

The fourth proportional to 512,509.11, 768,837.15 and 157,552.89 is: 236,351.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,509.11 : 768,837.15 = 157,552.89 : x
  2. Step 2: Convert to fraction form
    512,509.11/768,837.15 = 157,552.89/x
  3. Step 3: Cross multiply
    512,509.11x = 768,837.15 × 157,552.89
  4. Step 4: Simplify right side
    512,509.11x = 121,132,514,921.86
  5. Step 5: Solve for x
    x = 121,132,514,921.86/512,509.11
  6. Step 6: Final answer
    x = 236,351.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.