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Finding the Fourth Proportional to 207,292.76, 310,905.90 and 74,148.20

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Solution

The fourth proportional to 207,292.76, 310,905.90 and 74,148.20 is: 111,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,292.76 : 310,905.90 = 74,148.20 : x
  2. Step 2: Convert to fraction form
    207,292.76/310,905.90 = 74,148.20/x
  3. Step 3: Cross multiply
    207,292.76x = 310,905.90 × 74,148.20
  4. Step 4: Simplify right side
    207,292.76x = 23,053,112,854.38
  5. Step 5: Solve for x
    x = 23,053,112,854.38/207,292.76
  6. Step 6: Final answer
    x = 111,210.41

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1.5x scale

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.