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Finding the Fourth Proportional to 156,958.60, 235,437.90 and 112,491.40

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Solution

The fourth proportional to 156,958.60, 235,437.90 and 112,491.40 is: 168,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,958.60 : 235,437.90 = 112,491.40 : x
  2. Step 2: Convert to fraction form
    156,958.60/235,437.90 = 112,491.40/x
  3. Step 3: Cross multiply
    156,958.60x = 235,437.90 × 112,491.40
  4. Step 4: Simplify right side
    156,958.60x = 26,484,738,984.06
  5. Step 5: Solve for x
    x = 26,484,738,984.06/156,958.60
  6. Step 6: Final answer
    x = 168,737.10

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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.