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Finding the Fourth Proportional to 559,521.78, 839,530.74 and 293,218.98

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Solution

The fourth proportional to 559,521.78, 839,530.74 and 293,218.98 is: 439,958.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,521.78 : 839,530.74 = 293,218.98 : x
  2. Step 2: Convert to fraction form
    559,521.78/839,530.74 = 293,218.98/x
  3. Step 3: Cross multiply
    559,521.78x = 839,530.74 × 293,218.98
  4. Step 4: Simplify right side
    559,521.78x = 246,166,347,261.45
  5. Step 5: Solve for x
    x = 246,166,347,261.45/559,521.78
  6. Step 6: Final answer
    x = 439,958.47

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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.