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Finding the Fourth Proportional to 737,553.10, 1,015,680.90 and 640,712.74

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Solution

The fourth proportional to 737,553.10, 1,015,680.90 and 640,712.74 is: 882,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,553.10 : 1,015,680.90 = 640,712.74 : x
  2. Step 2: Convert to fraction form
    737,553.10/1,015,680.90 = 640,712.74/x
  3. Step 3: Cross multiply
    737,553.10x = 1,015,680.90 × 640,712.74
  4. Step 4: Simplify right side
    737,553.10x = 650,759,692,404.67
  5. Step 5: Solve for x
    x = 650,759,692,404.67/737,553.10
  6. Step 6: Final answer
    x = 882,322.50

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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.