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Finding the Fourth Proportional to 456,166.40, 684,184.80 and 156,660.80

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Solution

The fourth proportional to 456,166.40, 684,184.80 and 156,660.80 is: 234,968.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,166.40 : 684,184.80 = 156,660.80 : x
  2. Step 2: Convert to fraction form
    456,166.40/684,184.80 = 156,660.80/x
  3. Step 3: Cross multiply
    456,166.40x = 684,184.80 × 156,660.80
  4. Step 4: Simplify right side
    456,166.40x = 107,184,938,115.84
  5. Step 5: Solve for x
    x = 107,184,938,115.84/456,166.40
  6. Step 6: Final answer
    x = 234,968.95

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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.