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Finding the Fourth Proportional to 289,063.79, 398,811.14 and 168,179.19

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Solution

The fourth proportional to 289,063.79, 398,811.14 and 168,179.19 is: 232,030.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,063.79 : 398,811.14 = 168,179.19 : x
  2. Step 2: Convert to fraction form
    289,063.79/398,811.14 = 168,179.19/x
  3. Step 3: Cross multiply
    289,063.79x = 398,811.14 × 168,179.19
  4. Step 4: Simplify right side
    289,063.79x = 67,071,733,728.42
  5. Step 5: Solve for x
    x = 67,071,733,728.42/289,063.79
  6. Step 6: Final answer
    x = 232,030.91

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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.