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Finding the Fourth Proportional to 518,473.74, 715,536.36 and 285,946.16

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Solution

The fourth proportional to 518,473.74, 715,536.36 and 285,946.16 is: 394,629.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,473.74 : 715,536.36 = 285,946.16 : x
  2. Step 2: Convert to fraction form
    518,473.74/715,536.36 = 285,946.16/x
  3. Step 3: Cross multiply
    518,473.74x = 715,536.36 × 285,946.16
  4. Step 4: Simplify right side
    518,473.74x = 204,604,870,904.70
  5. Step 5: Solve for x
    x = 204,604,870,904.70/518,473.74
  6. Step 6: Final answer
    x = 394,629.19

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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.