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Finding the Fourth Proportional to 112,359, 168,587.70 and 53,236.92

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Solution

The fourth proportional to 112,359, 168,587.70 and 53,236.92 is: 79,878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,359 : 168,587.70 = 53,236.92 : x
  2. Step 2: Convert to fraction form
    112,359/168,587.70 = 53,236.92/x
  3. Step 3: Cross multiply
    112,359x = 168,587.70 × 53,236.92
  4. Step 4: Simplify right side
    112,359x = 8,975,089,897.88
  5. Step 5: Solve for x
    x = 8,975,089,897.88/112,359
  6. Step 6: Final answer
    x = 79,878.69

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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.