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Finding the Fourth Proportional to 553,311.40, 829,967.10 and 534,065.80

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Solution

The fourth proportional to 553,311.40, 829,967.10 and 534,065.80 is: 801,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,311.40 : 829,967.10 = 534,065.80 : x
  2. Step 2: Convert to fraction form
    553,311.40/829,967.10 = 534,065.80/x
  3. Step 3: Cross multiply
    553,311.40x = 829,967.10 × 534,065.80
  4. Step 4: Simplify right side
    553,311.40x = 443,257,043,235.18
  5. Step 5: Solve for x
    x = 443,257,043,235.18/553,311.40
  6. Step 6: Final answer
    x = 801,098.70

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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.