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Finding the Fourth Proportional to 385,859.81, 578,811.58 and 119,658.17

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Solution

The fourth proportional to 385,859.81, 578,811.58 and 119,658.17 is: 179,494.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,859.81 : 578,811.58 = 119,658.17 : x
  2. Step 2: Convert to fraction form
    385,859.81/578,811.58 = 119,658.17/x
  3. Step 3: Cross multiply
    385,859.81x = 578,811.58 × 119,658.17
  4. Step 4: Simplify right side
    385,859.81x = 69,259,534,599.36
  5. Step 5: Solve for x
    x = 69,259,534,599.36/385,859.81
  6. Step 6: Final answer
    x = 179,494.04

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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.