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Finding the Fourth Proportional to 559,338.97, 771,558.08 and 395,811.51

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Solution

The fourth proportional to 559,338.97, 771,558.08 and 395,811.51 is: 545,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,338.97 : 771,558.08 = 395,811.51 : x
  2. Step 2: Convert to fraction form
    559,338.97/771,558.08 = 395,811.51/x
  3. Step 3: Cross multiply
    559,338.97x = 771,558.08 × 395,811.51
  4. Step 4: Simplify right side
    559,338.97x = 305,391,573,674.78
  5. Step 5: Solve for x
    x = 305,391,573,674.78/559,338.97
  6. Step 6: Final answer
    x = 545,986.58

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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.