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Finding the Fourth Proportional to 499,324.88, 689,070.76 and 272,970.38

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Solution

The fourth proportional to 499,324.88, 689,070.76 and 272,970.38 is: 376,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,324.88 : 689,070.76 = 272,970.38 : x
  2. Step 2: Convert to fraction form
    499,324.88/689,070.76 = 272,970.38/x
  3. Step 3: Cross multiply
    499,324.88x = 689,070.76 × 272,970.38
  4. Step 4: Simplify right side
    499,324.88x = 188,095,903,076.31
  5. Step 5: Solve for x
    x = 188,095,903,076.31/499,324.88
  6. Step 6: Final answer
    x = 376,700.45

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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.