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Finding the Fourth Proportional to 38,601.62, 53,267.76 and 21,602.99

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Solution

The fourth proportional to 38,601.62, 53,267.76 and 21,602.99 is: 29,810.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,601.62 : 53,267.76 = 21,602.99 : x
  2. Step 2: Convert to fraction form
    38,601.62/53,267.76 = 21,602.99/x
  3. Step 3: Cross multiply
    38,601.62x = 53,267.76 × 21,602.99
  4. Step 4: Simplify right side
    38,601.62x = 1,150,742,849.20
  5. Step 5: Solve for x
    x = 1,150,742,849.20/38,601.62
  6. Step 6: Final answer
    x = 29,810.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.