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Finding the Fourth Proportional to 456,120.90, 684,116.55 and 156,615.30

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Solution

The fourth proportional to 456,120.90, 684,116.55 and 156,615.30 is: 234,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,120.90 : 684,116.55 = 156,615.30 : x
  2. Step 2: Convert to fraction form
    456,120.90/684,116.55 = 156,615.30/x
  3. Step 3: Cross multiply
    456,120.90x = 684,116.55 × 156,615.30
  4. Step 4: Simplify right side
    456,120.90x = 107,143,118,713.22
  5. Step 5: Solve for x
    x = 107,143,118,713.22/456,120.90
  6. Step 6: Final answer
    x = 234,900.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.