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Finding the Fourth Proportional to 618,541.33, 926,236.95 and 407,539.57

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Solution

The fourth proportional to 618,541.33, 926,236.95 and 407,539.57 is: 610,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,541.33 : 926,236.95 = 407,539.57 : x
  2. Step 2: Convert to fraction form
    618,541.33/926,236.95 = 407,539.57/x
  3. Step 3: Cross multiply
    618,541.33x = 926,236.95 × 407,539.57
  4. Step 4: Simplify right side
    618,541.33x = 377,478,208,321.11
  5. Step 5: Solve for x
    x = 377,478,208,321.11/618,541.33
  6. Step 6: Final answer
    x = 610,271.60

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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.