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Finding the Fourth Proportional to 289,011.05, 398,827.04 and 159,954.81

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Solution

The fourth proportional to 289,011.05, 398,827.04 and 159,954.81 is: 220,733.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,011.05 : 398,827.04 = 159,954.81 : x
  2. Step 2: Convert to fraction form
    289,011.05/398,827.04 = 159,954.81/x
  3. Step 3: Cross multiply
    289,011.05x = 398,827.04 × 159,954.81
  4. Step 4: Simplify right side
    289,011.05x = 63,794,302,606.29
  5. Step 5: Solve for x
    x = 63,794,302,606.29/289,011.05
  6. Step 6: Final answer
    x = 220,733.10

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1.5x scale

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.