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Finding the Fourth Proportional to 677,887.11, 935,483.85 and 371,965.50

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Solution

The fourth proportional to 677,887.11, 935,483.85 and 371,965.50 is: 513,312.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,887.11 : 935,483.85 = 371,965.50 : x
  2. Step 2: Convert to fraction form
    677,887.11/935,483.85 = 371,965.50/x
  3. Step 3: Cross multiply
    677,887.11x = 935,483.85 × 371,965.50
  4. Step 4: Simplify right side
    677,887.11x = 347,967,718,007.18
  5. Step 5: Solve for x
    x = 347,967,718,007.18/677,887.11
  6. Step 6: Final answer
    x = 513,312.19

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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.