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Finding the Fourth Proportional to 677,901.78, 935,499.78 and 376,095.78

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Solution

The fourth proportional to 677,901.78, 935,499.78 and 376,095.78 is: 519,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,901.78 : 935,499.78 = 376,095.78 : x
  2. Step 2: Convert to fraction form
    677,901.78/935,499.78 = 376,095.78/x
  3. Step 3: Cross multiply
    677,901.78x = 935,499.78 × 376,095.78
  4. Step 4: Simplify right side
    677,901.78x = 351,837,519,448.93
  5. Step 5: Solve for x
    x = 351,837,519,448.93/677,901.78
  6. Step 6: Final answer
    x = 519,009.58

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1.5x scale

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.