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Finding the Fourth Proportional to 611,437.20, 916,378.20 and 544,563.60

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Solution

The fourth proportional to 611,437.20, 916,378.20 and 544,563.60 is: 816,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,437.20 : 916,378.20 = 544,563.60 : x
  2. Step 2: Convert to fraction form
    611,437.20/916,378.20 = 544,563.60/x
  3. Step 3: Cross multiply
    611,437.20x = 916,378.20 × 544,563.60
  4. Step 4: Simplify right side
    611,437.20x = 499,026,211,553.52
  5. Step 5: Solve for x
    x = 499,026,211,553.52/611,437.20
  6. Step 6: Final answer
    x = 816,152.85

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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.