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Finding the Fourth Proportional to 38,005.74, 56,958.93 and 20,437.74

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Solution

The fourth proportional to 38,005.74, 56,958.93 and 20,437.74 is: 30,629.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,005.74 : 56,958.93 = 20,437.74 : x
  2. Step 2: Convert to fraction form
    38,005.74/56,958.93 = 20,437.74/x
  3. Step 3: Cross multiply
    38,005.74x = 56,958.93 × 20,437.74
  4. Step 4: Simplify right side
    38,005.74x = 1,164,111,802.02
  5. Step 5: Solve for x
    x = 1,164,111,802.02/38,005.74
  6. Step 6: Final answer
    x = 30,629.89

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1.5x scale

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.