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Finding the Fourth Proportional to 413,554.79, 620,415.21 and 188,854.88

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Solution

The fourth proportional to 413,554.79, 620,415.21 and 188,854.88 is: 283,320.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,554.79 : 620,415.21 = 188,854.88 : x
  2. Step 2: Convert to fraction form
    413,554.79/620,415.21 = 188,854.88/x
  3. Step 3: Cross multiply
    413,554.79x = 620,415.21 × 188,854.88
  4. Step 4: Simplify right side
    413,554.79x = 117,168,440,034.73
  5. Step 5: Solve for x
    x = 117,168,440,034.73/413,554.79
  6. Step 6: Final answer
    x = 283,320.23

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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.