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Finding the Fourth Proportional to 408,048.90, 610,690.95 and 408,048.90

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Solution

The fourth proportional to 408,048.90, 610,690.95 and 408,048.90 is: 610,690.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,048.90 : 610,690.95 = 408,048.90 : x
  2. Step 2: Convert to fraction form
    408,048.90/610,690.95 = 408,048.90/x
  3. Step 3: Cross multiply
    408,048.90x = 610,690.95 × 408,048.90
  4. Step 4: Simplify right side
    408,048.90x = 249,191,770,387.46
  5. Step 5: Solve for x
    x = 249,191,770,387.46/408,048.90
  6. Step 6: Final answer
    x = 610,690.95

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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.