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Finding the Fourth Proportional to 156,430.06, 215,872.18 and 88,460.38

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Solution

The fourth proportional to 156,430.06, 215,872.18 and 88,460.38 is: 122,074.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,430.06 : 215,872.18 = 88,460.38 : x
  2. Step 2: Convert to fraction form
    156,430.06/215,872.18 = 88,460.38/x
  3. Step 3: Cross multiply
    156,430.06x = 215,872.18 × 88,460.38
  4. Step 4: Simplify right side
    156,430.06x = 19,096,134,313.40
  5. Step 5: Solve for x
    x = 19,096,134,313.40/156,430.06
  6. Step 6: Final answer
    x = 122,074.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.