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Finding the Fourth Proportional to 614,173.14, 847,741.41 and 387,969.30

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Solution

The fourth proportional to 614,173.14, 847,741.41 and 387,969.30 is: 535,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,173.14 : 847,741.41 = 387,969.30 : x
  2. Step 2: Convert to fraction form
    614,173.14/847,741.41 = 387,969.30/x
  3. Step 3: Cross multiply
    614,173.14x = 847,741.41 × 387,969.30
  4. Step 4: Simplify right side
    614,173.14x = 328,897,641,418.71
  5. Step 5: Solve for x
    x = 328,897,641,418.71/614,173.14
  6. Step 6: Final answer
    x = 535,512.90

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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.