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Finding the Fourth Proportional to 545,058.18, 817,718.13 and 171,081.18

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Solution

The fourth proportional to 545,058.18, 817,718.13 and 171,081.18 is: 256,662.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,058.18 : 817,718.13 = 171,081.18 : x
  2. Step 2: Convert to fraction form
    545,058.18/817,718.13 = 171,081.18/x
  3. Step 3: Cross multiply
    545,058.18x = 817,718.13 × 171,081.18
  4. Step 4: Simplify right side
    545,058.18x = 139,896,182,587.79
  5. Step 5: Solve for x
    x = 139,896,182,587.79/545,058.18
  6. Step 6: Final answer
    x = 256,662.84

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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.