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Finding the Fourth Proportional to 622,907.40, 932,805.90 and 411,400.20

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Solution

The fourth proportional to 622,907.40, 932,805.90 and 411,400.20 is: 616,073.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,907.40 : 932,805.90 = 411,400.20 : x
  2. Step 2: Convert to fraction form
    622,907.40/932,805.90 = 411,400.20/x
  3. Step 3: Cross multiply
    622,907.40x = 932,805.90 × 411,400.20
  4. Step 4: Simplify right side
    622,907.40x = 383,756,533,821.18
  5. Step 5: Solve for x
    x = 383,756,533,821.18/622,907.40
  6. Step 6: Final answer
    x = 616,073.17

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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.