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Finding the Fourth Proportional to 112,064.40, 168,096.60 and 53,015.40

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Solution

The fourth proportional to 112,064.40, 168,096.60 and 53,015.40 is: 79,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,064.40 : 168,096.60 = 53,015.40 : x
  2. Step 2: Convert to fraction form
    112,064.40/168,096.60 = 53,015.40/x
  3. Step 3: Cross multiply
    112,064.40x = 168,096.60 × 53,015.40
  4. Step 4: Simplify right side
    112,064.40x = 8,911,708,487.64
  5. Step 5: Solve for x
    x = 8,911,708,487.64/112,064.40
  6. Step 6: Final answer
    x = 79,523.10

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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.