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Finding the Fourth Proportional to 71,066.91, 106,577.69 and 28,946.91

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Solution

The fourth proportional to 71,066.91, 106,577.69 and 28,946.91 is: 43,411.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,066.91 : 106,577.69 = 28,946.91 : x
  2. Step 2: Convert to fraction form
    71,066.91/106,577.69 = 28,946.91/x
  3. Step 3: Cross multiply
    71,066.91x = 106,577.69 × 28,946.91
  4. Step 4: Simplify right side
    71,066.91x = 3,085,094,655.70
  5. Step 5: Solve for x
    x = 3,085,094,655.70/71,066.91
  6. Step 6: Final answer
    x = 43,411.13

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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.