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Finding the Fourth Proportional to 571,847.40, 857,511.90 and 216,743.40

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Solution

The fourth proportional to 571,847.40, 857,511.90 and 216,743.40 is: 325,016.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,847.40 : 857,511.90 = 216,743.40 : x
  2. Step 2: Convert to fraction form
    571,847.40/857,511.90 = 216,743.40/x
  3. Step 3: Cross multiply
    571,847.40x = 857,511.90 × 216,743.40
  4. Step 4: Simplify right side
    571,847.40x = 185,860,044,746.46
  5. Step 5: Solve for x
    x = 185,860,044,746.46/571,847.40
  6. Step 6: Final answer
    x = 325,016.86

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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.