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Finding the Fourth Proportional to 413,628.80, 620,443.20 and 176,995.40

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Solution

The fourth proportional to 413,628.80, 620,443.20 and 176,995.40 is: 265,493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,628.80 : 620,443.20 = 176,995.40 : x
  2. Step 2: Convert to fraction form
    413,628.80/620,443.20 = 176,995.40/x
  3. Step 3: Cross multiply
    413,628.80x = 620,443.20 × 176,995.40
  4. Step 4: Simplify right side
    413,628.80x = 109,815,592,361.28
  5. Step 5: Solve for x
    x = 109,815,592,361.28/413,628.80
  6. Step 6: Final answer
    x = 265,493.10

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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.