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Finding the Fourth Proportional to 211,358.40, 317,008.80 and 63,614.40

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Solution

The fourth proportional to 211,358.40, 317,008.80 and 63,614.40 is: 95,412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,358.40 : 317,008.80 = 63,614.40 : x
  2. Step 2: Convert to fraction form
    211,358.40/317,008.80 = 63,614.40/x
  3. Step 3: Cross multiply
    211,358.40x = 317,008.80 × 63,614.40
  4. Step 4: Simplify right side
    211,358.40x = 20,166,324,606.72
  5. Step 5: Solve for x
    x = 20,166,324,606.72/211,358.40
  6. Step 6: Final answer
    x = 95,412.93

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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.