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Finding the Fourth Proportional to 857,817, 1,286,725.54 and 587,678.76

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Solution

The fourth proportional to 857,817, 1,286,725.54 and 587,678.76 is: 881,518.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,817 : 1,286,725.54 = 587,678.76 : x
  2. Step 2: Convert to fraction form
    857,817/1,286,725.54 = 587,678.76/x
  3. Step 3: Cross multiply
    857,817x = 1,286,725.54 × 587,678.76
  4. Step 4: Simplify right side
    857,817x = 756,181,269,807.53
  5. Step 5: Solve for x
    x = 756,181,269,807.53/857,817
  6. Step 6: Final answer
    x = 881,518.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.