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Finding the Fourth Proportional to 571,090.79, 856,638.14 and 144,626.46

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Solution

The fourth proportional to 571,090.79, 856,638.14 and 144,626.46 is: 216,940.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,090.79 : 856,638.14 = 144,626.46 : x
  2. Step 2: Convert to fraction form
    571,090.79/856,638.14 = 144,626.46/x
  3. Step 3: Cross multiply
    571,090.79x = 856,638.14 × 144,626.46
  4. Step 4: Simplify right side
    571,090.79x = 123,892,540,966.05
  5. Step 5: Solve for x
    x = 123,892,540,966.05/571,090.79
  6. Step 6: Final answer
    x = 216,940.19

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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.