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Finding the Fourth Proportional to 279,099.36, 385,154.40 and 151,776

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Solution

The fourth proportional to 279,099.36, 385,154.40 and 151,776 is: 209,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,099.36 : 385,154.40 = 151,776 : x
  2. Step 2: Convert to fraction form
    279,099.36/385,154.40 = 151,776/x
  3. Step 3: Cross multiply
    279,099.36x = 385,154.40 × 151,776
  4. Step 4: Simplify right side
    279,099.36x = 58,457,194,214.40
  5. Step 5: Solve for x
    x = 58,457,194,214.40/279,099.36
  6. Step 6: Final answer
    x = 209,449.40

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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.