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Finding the Fourth Proportional to 518,283.43, 714,903.77 and 356,858.12

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Solution

The fourth proportional to 518,283.43, 714,903.77 and 356,858.12 is: 492,238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,283.43 : 714,903.77 = 356,858.12 : x
  2. Step 2: Convert to fraction form
    518,283.43/714,903.77 = 356,858.12/x
  3. Step 3: Cross multiply
    518,283.43x = 714,903.77 × 356,858.12
  4. Step 4: Simplify right side
    518,283.43x = 255,119,218,022.52
  5. Step 5: Solve for x
    x = 255,119,218,022.52/518,283.43
  6. Step 6: Final answer
    x = 492,238.81

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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.