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Finding the Fourth Proportional to 545,059.18, 817,719.63 and 171,082.18

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Solution

The fourth proportional to 545,059.18, 817,719.63 and 171,082.18 is: 256,664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,059.18 : 817,719.63 = 171,082.18 : x
  2. Step 2: Convert to fraction form
    545,059.18/817,719.63 = 171,082.18/x
  3. Step 3: Cross multiply
    545,059.18x = 817,719.63 × 171,082.18
  4. Step 4: Simplify right side
    545,059.18x = 139,897,256,929.19
  5. Step 5: Solve for x
    x = 139,897,256,929.19/545,059.18
  6. Step 6: Final answer
    x = 256,664.34

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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.