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Finding the Fourth Proportional to 404,585.40, 605,711.70 and 404,585.40

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Solution

The fourth proportional to 404,585.40, 605,711.70 and 404,585.40 is: 605,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,585.40 : 605,711.70 = 404,585.40 : x
  2. Step 2: Convert to fraction form
    404,585.40/605,711.70 = 404,585.40/x
  3. Step 3: Cross multiply
    404,585.40x = 605,711.70 × 404,585.40
  4. Step 4: Simplify right side
    404,585.40x = 245,062,110,429.18
  5. Step 5: Solve for x
    x = 245,062,110,429.18/404,585.40
  6. Step 6: Final answer
    x = 605,711.70

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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.