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Finding the Fourth Proportional to 29,368.69, 40,530.80 and 16,621.89

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Solution

The fourth proportional to 29,368.69, 40,530.80 and 16,621.89 is: 22,939.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,368.69 : 40,530.80 = 16,621.89 : x
  2. Step 2: Convert to fraction form
    29,368.69/40,530.80 = 16,621.89/x
  3. Step 3: Cross multiply
    29,368.69x = 40,530.80 × 16,621.89
  4. Step 4: Simplify right side
    29,368.69x = 673,698,499.21
  5. Step 5: Solve for x
    x = 673,698,499.21/29,368.69
  6. Step 6: Final answer
    x = 22,939.34

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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.