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Finding the Fourth Proportional to 397,373.74, 548,359.06 and 225,303.28

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Solution

The fourth proportional to 397,373.74, 548,359.06 and 225,303.28 is: 310,909.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,373.74 : 548,359.06 = 225,303.28 : x
  2. Step 2: Convert to fraction form
    397,373.74/548,359.06 = 225,303.28/x
  3. Step 3: Cross multiply
    397,373.74x = 548,359.06 × 225,303.28
  4. Step 4: Simplify right side
    397,373.74x = 123,547,094,835.72
  5. Step 5: Solve for x
    x = 123,547,094,835.72/397,373.74
  6. Step 6: Final answer
    x = 310,909.06

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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.