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Finding the Fourth Proportional to 612,650.20, 916,901.70 and 538,000.60

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Solution

The fourth proportional to 612,650.20, 916,901.70 and 538,000.60 is: 805,179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,650.20 : 916,901.70 = 538,000.60 : x
  2. Step 2: Convert to fraction form
    612,650.20/916,901.70 = 538,000.60/x
  3. Step 3: Cross multiply
    612,650.20x = 916,901.70 × 538,000.60
  4. Step 4: Simplify right side
    612,650.20x = 493,293,664,741.02
  5. Step 5: Solve for x
    x = 493,293,664,741.02/612,650.20
  6. Step 6: Final answer
    x = 805,179.96

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1.5x scale

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.