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Finding the Fourth Proportional to 647,415.10, 971,353.05 and 624,375.10

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Solution

The fourth proportional to 647,415.10, 971,353.05 and 624,375.10 is: 936,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,415.10 : 971,353.05 = 624,375.10 : x
  2. Step 2: Convert to fraction form
    647,415.10/971,353.05 = 624,375.10/x
  3. Step 3: Cross multiply
    647,415.10x = 971,353.05 × 624,375.10
  4. Step 4: Simplify right side
    647,415.10x = 606,488,657,729.06
  5. Step 5: Solve for x
    x = 606,488,657,729.06/647,415.10
  6. Step 6: Final answer
    x = 936,784.85

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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.