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Finding the Fourth Proportional to 545,148.68, 817,757.64 and 171,186.44

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Solution

The fourth proportional to 545,148.68, 817,757.64 and 171,186.44 is: 256,790.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,148.68 : 817,757.64 = 171,186.44 : x
  2. Step 2: Convert to fraction form
    545,148.68/817,757.64 = 171,186.44/x
  3. Step 3: Cross multiply
    545,148.68x = 817,757.64 × 171,186.44
  4. Step 4: Simplify right side
    545,148.68x = 139,989,019,174.40
  5. Step 5: Solve for x
    x = 139,989,019,174.40/545,148.68
  6. Step 6: Final answer
    x = 256,790.53

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1.5x scale

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.