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Finding the Fourth Proportional to 545,009.50, 817,543.41 and 171,061.66

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Solution

The fourth proportional to 545,009.50, 817,543.41 and 171,061.66 is: 256,601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,009.50 : 817,543.41 = 171,061.66 : x
  2. Step 2: Convert to fraction form
    545,009.50/817,543.41 = 171,061.66/x
  3. Step 3: Cross multiply
    545,009.50x = 817,543.41 × 171,061.66
  4. Step 4: Simplify right side
    545,009.50x = 139,850,332,836.66
  5. Step 5: Solve for x
    x = 139,850,332,836.66/545,009.50
  6. Step 6: Final answer
    x = 256,601.64

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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.