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Finding the Fourth Proportional to 289,921.68, 435,007.67 and 156,895.79

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Solution

The fourth proportional to 289,921.68, 435,007.67 and 156,895.79 is: 235,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,921.68 : 435,007.67 = 156,895.79 : x
  2. Step 2: Convert to fraction form
    289,921.68/435,007.67 = 156,895.79/x
  3. Step 3: Cross multiply
    289,921.68x = 435,007.67 × 156,895.79
  4. Step 4: Simplify right side
    289,921.68x = 68,250,869,081.19
  5. Step 5: Solve for x
    x = 68,250,869,081.19/289,921.68
  6. Step 6: Final answer
    x = 235,411.40

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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.