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Finding the Fourth Proportional to 571,130.85, 856,698.18 and 144,666.54

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Solution

The fourth proportional to 571,130.85, 856,698.18 and 144,666.54 is: 217,000.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,130.85 : 856,698.18 = 144,666.54 : x
  2. Step 2: Convert to fraction form
    571,130.85/856,698.18 = 144,666.54/x
  3. Step 3: Cross multiply
    571,130.85x = 856,698.18 × 144,666.54
  4. Step 4: Simplify right side
    571,130.85x = 123,935,561,524.90
  5. Step 5: Solve for x
    x = 123,935,561,524.90/571,130.85
  6. Step 6: Final answer
    x = 217,000.29

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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.