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Finding the Fourth Proportional to 365,128.30, 547,709.37 and 112,420.11

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Solution

The fourth proportional to 365,128.30, 547,709.37 and 112,420.11 is: 168,635.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,128.30 : 547,709.37 = 112,420.11 : x
  2. Step 2: Convert to fraction form
    365,128.30/547,709.37 = 112,420.11/x
  3. Step 3: Cross multiply
    365,128.30x = 547,709.37 × 112,420.11
  4. Step 4: Simplify right side
    365,128.30x = 61,573,547,342.38
  5. Step 5: Solve for x
    x = 61,573,547,342.38/365,128.30
  6. Step 6: Final answer
    x = 168,635.37

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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.