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Finding the Fourth Proportional to 261,688.52, 361,148.82 and 148,518.56

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Solution

The fourth proportional to 261,688.52, 361,148.82 and 148,518.56 is: 204,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,688.52 : 361,148.82 = 148,518.56 : x
  2. Step 2: Convert to fraction form
    261,688.52/361,148.82 = 148,518.56/x
  3. Step 3: Cross multiply
    261,688.52x = 361,148.82 × 148,518.56
  4. Step 4: Simplify right side
    261,688.52x = 53,637,302,692.10
  5. Step 5: Solve for x
    x = 53,637,302,692.10/261,688.52
  6. Step 6: Final answer
    x = 204,966.20

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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.