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Finding the Fourth Proportional to 29,141.40, 43,730.10 and 11,609.40

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Solution

The fourth proportional to 29,141.40, 43,730.10 and 11,609.40 is: 17,421.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,141.40 : 43,730.10 = 11,609.40 : x
  2. Step 2: Convert to fraction form
    29,141.40/43,730.10 = 11,609.40/x
  3. Step 3: Cross multiply
    29,141.40x = 43,730.10 × 11,609.40
  4. Step 4: Simplify right side
    29,141.40x = 507,680,222.94
  5. Step 5: Solve for x
    x = 507,680,222.94/29,141.40
  6. Step 6: Final answer
    x = 17,421.27

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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.