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Finding the Fourth Proportional to 571,699.85, 857,374.20 and 395,340.17

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Solution

The fourth proportional to 571,699.85, 857,374.20 and 395,340.17 is: 592,888.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,699.85 : 857,374.20 = 395,340.17 : x
  2. Step 2: Convert to fraction form
    571,699.85/857,374.20 = 395,340.17/x
  3. Step 3: Cross multiply
    571,699.85x = 857,374.20 × 395,340.17
  4. Step 4: Simplify right side
    571,699.85x = 338,954,457,694.74
  5. Step 5: Solve for x
    x = 338,954,457,694.74/571,699.85
  6. Step 6: Final answer
    x = 592,888.84

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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.