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Finding the Fourth Proportional to 673,246.40, 1,009,367.40 and 406,950.80

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Solution

The fourth proportional to 673,246.40, 1,009,367.40 and 406,950.80 is: 610,122.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,246.40 : 1,009,367.40 = 406,950.80 : x
  2. Step 2: Convert to fraction form
    673,246.40/1,009,367.40 = 406,950.80/x
  3. Step 3: Cross multiply
    673,246.40x = 1,009,367.40 × 406,950.80
  4. Step 4: Simplify right side
    673,246.40x = 410,762,870,923.92
  5. Step 5: Solve for x
    x = 410,762,870,923.92/673,246.40
  6. Step 6: Final answer
    x = 610,122.64

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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.