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Finding the Fourth Proportional to 397,373.67, 548,358.98 and 225,303.21

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Solution

The fourth proportional to 397,373.67, 548,358.98 and 225,303.21 is: 310,908.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,373.67 : 548,358.98 = 225,303.21 : x
  2. Step 2: Convert to fraction form
    397,373.67/548,358.98 = 225,303.21/x
  3. Step 3: Cross multiply
    397,373.67x = 548,358.98 × 225,303.21
  4. Step 4: Simplify right side
    397,373.67x = 123,547,037,299.81
  5. Step 5: Solve for x
    x = 123,547,037,299.81/397,373.67
  6. Step 6: Final answer
    x = 310,908.97

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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.