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Finding the Fourth Proportional to 647,498.76, 893,636.19 and 371,964.30

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Solution

The fourth proportional to 647,498.76, 893,636.19 and 371,964.30 is: 513,361.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,498.76 : 893,636.19 = 371,964.30 : x
  2. Step 2: Convert to fraction form
    647,498.76/893,636.19 = 371,964.30/x
  3. Step 3: Cross multiply
    647,498.76x = 893,636.19 × 371,964.30
  4. Step 4: Simplify right side
    647,498.76x = 332,400,759,868.02
  5. Step 5: Solve for x
    x = 332,400,759,868.02/647,498.76
  6. Step 6: Final answer
    x = 513,361.23

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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.