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Finding the Fourth Proportional to 530,861.55, 732,563.69 and 289,142.97

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Solution

The fourth proportional to 530,861.55, 732,563.69 and 289,142.97 is: 399,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,861.55 : 732,563.69 = 289,142.97 : x
  2. Step 2: Convert to fraction form
    530,861.55/732,563.69 = 289,142.97/x
  3. Step 3: Cross multiply
    530,861.55x = 732,563.69 × 289,142.97
  4. Step 4: Simplify right side
    530,861.55x = 211,815,641,040.76
  5. Step 5: Solve for x
    x = 211,815,641,040.76/530,861.55
  6. Step 6: Final answer
    x = 399,003.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.