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Finding the Fourth Proportional to 671,728.51, 927,024.30 and 505,859.52

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Solution

The fourth proportional to 671,728.51, 927,024.30 and 505,859.52 is: 698,115.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,728.51 : 927,024.30 = 505,859.52 : x
  2. Step 2: Convert to fraction form
    671,728.51/927,024.30 = 505,859.52/x
  3. Step 3: Cross multiply
    671,728.51x = 927,024.30 × 505,859.52
  4. Step 4: Simplify right side
    671,728.51x = 468,944,067,426.34
  5. Step 5: Solve for x
    x = 468,944,067,426.34/671,728.51
  6. Step 6: Final answer
    x = 698,115.48

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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.