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Finding the Fourth Proportional to 518,309.30, 777,809.55 and 293,669.30

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Solution

The fourth proportional to 518,309.30, 777,809.55 and 293,669.30 is: 440,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,309.30 : 777,809.55 = 293,669.30 : x
  2. Step 2: Convert to fraction form
    518,309.30/777,809.55 = 293,669.30/x
  3. Step 3: Cross multiply
    518,309.30x = 777,809.55 × 293,669.30
  4. Step 4: Simplify right side
    518,309.30x = 228,418,786,081.82
  5. Step 5: Solve for x
    x = 228,418,786,081.82/518,309.30
  6. Step 6: Final answer
    x = 440,699.76

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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.