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Finding the Fourth Proportional to 592,581.74, 817,756.86 and 320,643.68

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Solution

The fourth proportional to 592,581.74, 817,756.86 and 320,643.68 is: 442,485.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,581.74 : 817,756.86 = 320,643.68 : x
  2. Step 2: Convert to fraction form
    592,581.74/817,756.86 = 320,643.68/x
  3. Step 3: Cross multiply
    592,581.74x = 817,756.86 × 320,643.68
  4. Step 4: Simplify right side
    592,581.74x = 262,208,568,935.65
  5. Step 5: Solve for x
    x = 262,208,568,935.65/592,581.74
  6. Step 6: Final answer
    x = 442,485.06

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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.