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Finding the Fourth Proportional to 70,440.30, 105,587.01 and 37,197.90

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Solution

The fourth proportional to 70,440.30, 105,587.01 and 37,197.90 is: 55,758.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,440.30 : 105,587.01 = 37,197.90 : x
  2. Step 2: Convert to fraction form
    70,440.30/105,587.01 = 37,197.90/x
  3. Step 3: Cross multiply
    70,440.30x = 105,587.01 × 37,197.90
  4. Step 4: Simplify right side
    70,440.30x = 3,927,615,039.28
  5. Step 5: Solve for x
    x = 3,927,615,039.28/70,440.30
  6. Step 6: Final answer
    x = 55,758.07

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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.