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Finding the Fourth Proportional to 419,250.80, 578,925.71 and 405,693.61

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Solution

The fourth proportional to 419,250.80, 578,925.71 and 405,693.61 is: 560,205.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,250.80 : 578,925.71 = 405,693.61 : x
  2. Step 2: Convert to fraction form
    419,250.80/578,925.71 = 405,693.61/x
  3. Step 3: Cross multiply
    419,250.80x = 578,925.71 × 405,693.61
  4. Step 4: Simplify right side
    419,250.80x = 234,866,462,624.79
  5. Step 5: Solve for x
    x = 234,866,462,624.79/419,250.80
  6. Step 6: Final answer
    x = 560,205.16

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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.