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Finding the Fourth Proportional to 878,463.64, 1,211,810.98 and 534,404.80

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Solution

The fourth proportional to 878,463.64, 1,211,810.98 and 534,404.80 is: 737,193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,463.64 : 1,211,810.98 = 534,404.80 : x
  2. Step 2: Convert to fraction form
    878,463.64/1,211,810.98 = 534,404.80/x
  3. Step 3: Cross multiply
    878,463.64x = 1,211,810.98 × 534,404.80
  4. Step 4: Simplify right side
    878,463.64x = 647,597,604,404.70
  5. Step 5: Solve for x
    x = 647,597,604,404.70/878,463.64
  6. Step 6: Final answer
    x = 737,193.41

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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.