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Finding the Fourth Proportional to 618,813.28, 928,484.55 and 259,068.16

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Solution

The fourth proportional to 618,813.28, 928,484.55 and 259,068.16 is: 388,713.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,813.28 : 928,484.55 = 259,068.16 : x
  2. Step 2: Convert to fraction form
    618,813.28/928,484.55 = 259,068.16/x
  3. Step 3: Cross multiply
    618,813.28x = 928,484.55 × 259,068.16
  4. Step 4: Simplify right side
    618,813.28x = 240,540,783,956.93
  5. Step 5: Solve for x
    x = 240,540,783,956.93/618,813.28
  6. Step 6: Final answer
    x = 388,713.03

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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.