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Finding the Fourth Proportional to 571,910.76, 857,871.90 and 172,554.84

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Solution

The fourth proportional to 571,910.76, 857,871.90 and 172,554.84 is: 258,834.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,910.76 : 857,871.90 = 172,554.84 : x
  2. Step 2: Convert to fraction form
    571,910.76/857,871.90 = 172,554.84/x
  3. Step 3: Cross multiply
    571,910.76x = 857,871.90 × 172,554.84
  4. Step 4: Simplify right side
    571,910.76x = 148,029,948,445.00
  5. Step 5: Solve for x
    x = 148,029,948,445.00/571,910.76
  6. Step 6: Final answer
    x = 258,834.00

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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.