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Finding the Fourth Proportional to 641,541.40, 961,275.30 and 404,459.80

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Solution

The fourth proportional to 641,541.40, 961,275.30 and 404,459.80 is: 606,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,541.40 : 961,275.30 = 404,459.80 : x
  2. Step 2: Convert to fraction form
    641,541.40/961,275.30 = 404,459.80/x
  3. Step 3: Cross multiply
    641,541.40x = 961,275.30 × 404,459.80
  4. Step 4: Simplify right side
    641,541.40x = 388,797,215,582.94
  5. Step 5: Solve for x
    x = 388,797,215,582.94/641,541.40
  6. Step 6: Final answer
    x = 606,036.05

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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.