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Finding the Fourth Proportional to 623,315.40, 936,009.90 and 343,033.80

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Solution

The fourth proportional to 623,315.40, 936,009.90 and 343,033.80 is: 515,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,315.40 : 936,009.90 = 343,033.80 : x
  2. Step 2: Convert to fraction form
    623,315.40/936,009.90 = 343,033.80/x
  3. Step 3: Cross multiply
    623,315.40x = 936,009.90 × 343,033.80
  4. Step 4: Simplify right side
    623,315.40x = 321,083,032,834.62
  5. Step 5: Solve for x
    x = 321,083,032,834.62/623,315.40
  6. Step 6: Final answer
    x = 515,121.29

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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.