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Finding the Fourth Proportional to 508,009.36, 762,045.70 and 134,032.72

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Solution

The fourth proportional to 508,009.36, 762,045.70 and 134,032.72 is: 201,057.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,009.36 : 762,045.70 = 134,032.72 : x
  2. Step 2: Convert to fraction form
    508,009.36/762,045.70 = 134,032.72/x
  3. Step 3: Cross multiply
    508,009.36x = 762,045.70 × 134,032.72
  4. Step 4: Simplify right side
    508,009.36x = 102,139,057,935.30
  5. Step 5: Solve for x
    x = 102,139,057,935.30/508,009.36
  6. Step 6: Final answer
    x = 201,057.43

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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.