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Finding the Fourth Proportional to 272,703.76, 409,074.27 and 92,715.91

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Solution

The fourth proportional to 272,703.76, 409,074.27 and 92,715.91 is: 139,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,703.76 : 409,074.27 = 92,715.91 : x
  2. Step 2: Convert to fraction form
    272,703.76/409,074.27 = 92,715.91/x
  3. Step 3: Cross multiply
    272,703.76x = 409,074.27 × 92,715.91
  4. Step 4: Simplify right side
    272,703.76x = 37,927,693,200.64
  5. Step 5: Solve for x
    x = 37,927,693,200.64/272,703.76
  6. Step 6: Final answer
    x = 139,080.20

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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.