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Finding the Fourth Proportional to 191,384.84, 287,118.78 and 58,261.66

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Solution

The fourth proportional to 191,384.84, 287,118.78 and 58,261.66 is: 87,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,384.84 : 287,118.78 = 58,261.66 : x
  2. Step 2: Convert to fraction form
    191,384.84/287,118.78 = 58,261.66/x
  3. Step 3: Cross multiply
    191,384.84x = 287,118.78 × 58,261.66
  4. Step 4: Simplify right side
    191,384.84x = 16,728,015,803.70
  5. Step 5: Solve for x
    x = 16,728,015,803.70/191,384.84
  6. Step 6: Final answer
    x = 87,405.12

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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.