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Finding the Fourth Proportional to 74,797.63, 103,210.50 and 42,966.52

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Solution

The fourth proportional to 74,797.63, 103,210.50 and 42,966.52 is: 59,287.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,797.63 : 103,210.50 = 42,966.52 : x
  2. Step 2: Convert to fraction form
    74,797.63/103,210.50 = 42,966.52/x
  3. Step 3: Cross multiply
    74,797.63x = 103,210.50 × 42,966.52
  4. Step 4: Simplify right side
    74,797.63x = 4,434,595,915.56
  5. Step 5: Solve for x
    x = 4,434,595,915.56/74,797.63
  6. Step 6: Final answer
    x = 59,287.92

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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.