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Finding the Fourth Proportional to 653,153.40, 979,791.93 and 253,824.98

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Solution

The fourth proportional to 653,153.40, 979,791.93 and 253,824.98 is: 380,761.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,153.40 : 979,791.93 = 253,824.98 : x
  2. Step 2: Convert to fraction form
    653,153.40/979,791.93 = 253,824.98/x
  3. Step 3: Cross multiply
    653,153.40x = 979,791.93 × 253,824.98
  4. Step 4: Simplify right side
    653,153.40x = 248,695,662,137.45
  5. Step 5: Solve for x
    x = 248,695,662,137.45/653,153.40
  6. Step 6: Final answer
    x = 380,761.49

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Double scale
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Similar ratio
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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.