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Finding the Fourth Proportional to 647,558.20, 972,212.10 and 411,362.20

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Solution

The fourth proportional to 647,558.20, 972,212.10 and 411,362.20 is: 617,599.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,558.20 : 972,212.10 = 411,362.20 : x
  2. Step 2: Convert to fraction form
    647,558.20/972,212.10 = 411,362.20/x
  3. Step 3: Cross multiply
    647,558.20x = 972,212.10 × 411,362.20
  4. Step 4: Simplify right side
    647,558.20x = 399,931,308,322.62
  5. Step 5: Solve for x
    x = 399,931,308,322.62/647,558.20
  6. Step 6: Final answer
    x = 617,599.02

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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.