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Finding the Fourth Proportional to 499,568.77, 688,565.23 and 378,671.41

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Solution

The fourth proportional to 499,568.77, 688,565.23 and 378,671.41 is: 521,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,568.77 : 688,565.23 = 378,671.41 : x
  2. Step 2: Convert to fraction form
    499,568.77/688,565.23 = 378,671.41/x
  3. Step 3: Cross multiply
    499,568.77x = 688,565.23 × 378,671.41
  4. Step 4: Simplify right side
    499,568.77x = 260,739,966,521.07
  5. Step 5: Solve for x
    x = 260,739,966,521.07/499,568.77
  6. Step 6: Final answer
    x = 521,930.08

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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.