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Finding the Fourth Proportional to 621,652.19, 857,881.33 and 367,019.78

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Solution

The fourth proportional to 621,652.19, 857,881.33 and 367,019.78 is: 506,488.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,652.19 : 857,881.33 = 367,019.78 : x
  2. Step 2: Convert to fraction form
    621,652.19/857,881.33 = 367,019.78/x
  3. Step 3: Cross multiply
    621,652.19x = 857,881.33 × 367,019.78
  4. Step 4: Simplify right side
    621,652.19x = 314,859,411,795.75
  5. Step 5: Solve for x
    x = 314,859,411,795.75/621,652.19
  6. Step 6: Final answer
    x = 506,488.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.