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Finding the Fourth Proportional to 545,189.52, 817,916.04 and 171,212.52

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Solution

The fourth proportional to 545,189.52, 817,916.04 and 171,212.52 is: 256,860.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,189.52 : 817,916.04 = 171,212.52 : x
  2. Step 2: Convert to fraction form
    545,189.52/817,916.04 = 171,212.52/x
  3. Step 3: Cross multiply
    545,189.52x = 817,916.04 × 171,212.52
  4. Step 4: Simplify right side
    545,189.52x = 140,037,466,356.82
  5. Step 5: Solve for x
    x = 140,037,466,356.82/545,189.52
  6. Step 6: Final answer
    x = 256,860.16

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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.