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Finding the Fourth Proportional to 412,046.88, 620,877.93 and 338,807.63

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Solution

The fourth proportional to 412,046.88, 620,877.93 and 338,807.63 is: 510,520.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,046.88 : 620,877.93 = 338,807.63 : x
  2. Step 2: Convert to fraction form
    412,046.88/620,877.93 = 338,807.63/x
  3. Step 3: Cross multiply
    412,046.88x = 620,877.93 × 338,807.63
  4. Step 4: Simplify right side
    412,046.88x = 210,358,176,878.22
  5. Step 5: Solve for x
    x = 210,358,176,878.22/412,046.88
  6. Step 6: Final answer
    x = 510,520.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.