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Finding the Fourth Proportional to 38,762.98, 53,488.50 and 21,764.94

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Solution

The fourth proportional to 38,762.98, 53,488.50 and 21,764.94 is: 30,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,762.98 : 53,488.50 = 21,764.94 : x
  2. Step 2: Convert to fraction form
    38,762.98/53,488.50 = 21,764.94/x
  3. Step 3: Cross multiply
    38,762.98x = 53,488.50 × 21,764.94
  4. Step 4: Simplify right side
    38,762.98x = 1,164,173,993.19
  5. Step 5: Solve for x
    x = 1,164,173,993.19/38,762.98
  6. Step 6: Final answer
    x = 30,033.14

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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.