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Finding the Fourth Proportional to 404,430.20, 606,645.30 and 374,017.40

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Solution

The fourth proportional to 404,430.20, 606,645.30 and 374,017.40 is: 561,026.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,430.20 : 606,645.30 = 374,017.40 : x
  2. Step 2: Convert to fraction form
    404,430.20/606,645.30 = 374,017.40/x
  3. Step 3: Cross multiply
    404,430.20x = 606,645.30 × 374,017.40
  4. Step 4: Simplify right side
    404,430.20x = 226,895,897,828.22
  5. Step 5: Solve for x
    x = 226,895,897,828.22/404,430.20
  6. Step 6: Final answer
    x = 561,026.10

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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.