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Finding the Fourth Proportional to 419,561.49, 578,842.98 and 274,450.11

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Solution

The fourth proportional to 419,561.49, 578,842.98 and 274,450.11 is: 378,641.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,561.49 : 578,842.98 = 274,450.11 : x
  2. Step 2: Convert to fraction form
    419,561.49/578,842.98 = 274,450.11/x
  3. Step 3: Cross multiply
    419,561.49x = 578,842.98 × 274,450.11
  4. Step 4: Simplify right side
    419,561.49x = 158,863,516,639.51
  5. Step 5: Solve for x
    x = 158,863,516,639.51/419,561.49
  6. Step 6: Final answer
    x = 378,641.80

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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.