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Finding the Fourth Proportional to 445,972.70, 615,443.94 and 242,023.57

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Solution

The fourth proportional to 445,972.70, 615,443.94 and 242,023.57 is: 333,993.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,972.70 : 615,443.94 = 242,023.57 : x
  2. Step 2: Convert to fraction form
    445,972.70/615,443.94 = 242,023.57/x
  3. Step 3: Cross multiply
    445,972.70x = 615,443.94 × 242,023.57
  4. Step 4: Simplify right side
    445,972.70x = 148,951,937,955.06
  5. Step 5: Solve for x
    x = 148,951,937,955.06/445,972.70
  6. Step 6: Final answer
    x = 333,993.40

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1.5x scale

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.