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Finding the Fourth Proportional to 677,763.78, 935,314.50 and 375,957.78

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Solution

The fourth proportional to 677,763.78, 935,314.50 and 375,957.78 is: 518,822.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,763.78 : 935,314.50 = 375,957.78 : x
  2. Step 2: Convert to fraction form
    677,763.78/935,314.50 = 375,957.78/x
  3. Step 3: Cross multiply
    677,763.78x = 935,314.50 × 375,957.78
  4. Step 4: Simplify right side
    677,763.78x = 351,638,763,021.81
  5. Step 5: Solve for x
    x = 351,638,763,021.81/677,763.78
  6. Step 6: Final answer
    x = 518,822.00

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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.