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Finding the Fourth Proportional to 603,514.95, 905,426.20 and 283,604.69

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Solution

The fourth proportional to 603,514.95, 905,426.20 and 283,604.69 is: 425,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,514.95 : 905,426.20 = 283,604.69 : x
  2. Step 2: Convert to fraction form
    603,514.95/905,426.20 = 283,604.69/x
  3. Step 3: Cross multiply
    603,514.95x = 905,426.20 × 283,604.69
  4. Step 4: Simplify right side
    603,514.95x = 256,783,119,386.95
  5. Step 5: Solve for x
    x = 256,783,119,386.95/603,514.95
  6. Step 6: Final answer
    x = 425,479.30

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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.