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Finding the Fourth Proportional to 112,440.70, 168,466.65 and 53,148.70

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Solution

The fourth proportional to 112,440.70, 168,466.65 and 53,148.70 is: 79,631.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,440.70 : 168,466.65 = 53,148.70 : x
  2. Step 2: Convert to fraction form
    112,440.70/168,466.65 = 53,148.70/x
  3. Step 3: Cross multiply
    112,440.70x = 168,466.65 × 53,148.70
  4. Step 4: Simplify right side
    112,440.70x = 8,953,783,440.86
  5. Step 5: Solve for x
    x = 8,953,783,440.86/112,440.70
  6. Step 6: Final answer
    x = 79,631.16

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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.