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Finding the Fourth Proportional to 308,068.80, 424,900.86 and 265,119.72

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Solution

The fourth proportional to 308,068.80, 424,900.86 and 265,119.72 is: 365,663.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,068.80 : 424,900.86 = 265,119.72 : x
  2. Step 2: Convert to fraction form
    308,068.80/424,900.86 = 265,119.72/x
  3. Step 3: Cross multiply
    308,068.80x = 424,900.86 × 265,119.72
  4. Step 4: Simplify right side
    308,068.80x = 112,649,597,030.96
  5. Step 5: Solve for x
    x = 112,649,597,030.96/308,068.80
  6. Step 6: Final answer
    x = 365,663.76

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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.