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Finding the Fourth Proportional to 575,903,500.80, 863,855,251.20 and 531,561,638.40

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Solution

The fourth proportional to 575,903,500.80, 863,855,251.20 and 531,561,638.40 is: 797,342,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,903,500.80 : 863,855,251.20 = 531,561,638.40 : x
  2. Step 2: Convert to fraction form
    575,903,500.80/863,855,251.20 = 531,561,638.40/x
  3. Step 3: Cross multiply
    575,903,500.80x = 863,855,251.20 × 531,561,638.40
  4. Step 4: Simplify right side
    575,903,500.80x = 459,192,312,668,315,584
  5. Step 5: Solve for x
    x = 459,192,312,668,315,584/575,903,500.80
  6. Step 6: Final answer
    x = 797,342,457.60

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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.