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Finding the Fourth Proportional to 613,283.36, 920,045.39 and 213,937.16

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Solution

The fourth proportional to 613,283.36, 920,045.39 and 213,937.16 is: 320,947.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,283.36 : 920,045.39 = 213,937.16 : x
  2. Step 2: Convert to fraction form
    613,283.36/920,045.39 = 213,937.16/x
  3. Step 3: Cross multiply
    613,283.36x = 920,045.39 × 213,937.16
  4. Step 4: Simplify right side
    613,283.36x = 196,831,892,137.78
  5. Step 5: Solve for x
    x = 196,831,892,137.78/613,283.36
  6. Step 6: Final answer
    x = 320,947.72

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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.