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Finding the Fourth Proportional to 49,665.30, 74,497.95 and 28,597.20

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Solution

The fourth proportional to 49,665.30, 74,497.95 and 28,597.20 is: 42,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,665.30 : 74,497.95 = 28,597.20 : x
  2. Step 2: Convert to fraction form
    49,665.30/74,497.95 = 28,597.20/x
  3. Step 3: Cross multiply
    49,665.30x = 74,497.95 × 28,597.20
  4. Step 4: Simplify right side
    49,665.30x = 2,130,432,775.74
  5. Step 5: Solve for x
    x = 2,130,432,775.74/49,665.30
  6. Step 6: Final answer
    x = 42,895.80

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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.