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Finding the Fourth Proportional to 38,762.58, 53,491.68 and 21,766.96

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Solution

The fourth proportional to 38,762.58, 53,491.68 and 21,766.96 is: 30,038.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,762.58 : 53,491.68 = 21,766.96 : x
  2. Step 2: Convert to fraction form
    38,762.58/53,491.68 = 21,766.96/x
  3. Step 3: Cross multiply
    38,762.58x = 53,491.68 × 21,766.96
  4. Step 4: Simplify right side
    38,762.58x = 1,164,351,258.89
  5. Step 5: Solve for x
    x = 1,164,351,258.89/38,762.58
  6. Step 6: Final answer
    x = 30,038.02

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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.