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Finding the Fourth Proportional to 419,333.40, 578,601.30 and 247,305.58

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Solution

The fourth proportional to 419,333.40, 578,601.30 and 247,305.58 is: 341,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,333.40 : 578,601.30 = 247,305.58 : x
  2. Step 2: Convert to fraction form
    419,333.40/578,601.30 = 247,305.58/x
  3. Step 3: Cross multiply
    419,333.40x = 578,601.30 × 247,305.58
  4. Step 4: Simplify right side
    419,333.40x = 143,091,330,085.25
  5. Step 5: Solve for x
    x = 143,091,330,085.25/419,333.40
  6. Step 6: Final answer
    x = 341,235.23

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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.