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Finding the Fourth Proportional to 397,211.32, 548,013.90 and 254,055.16

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Solution

The fourth proportional to 397,211.32, 548,013.90 and 254,055.16 is: 350,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,211.32 : 548,013.90 = 254,055.16 : x
  2. Step 2: Convert to fraction form
    397,211.32/548,013.90 = 254,055.16/x
  3. Step 3: Cross multiply
    397,211.32x = 548,013.90 × 254,055.16
  4. Step 4: Simplify right side
    397,211.32x = 139,225,759,046.72
  5. Step 5: Solve for x
    x = 139,225,759,046.72/397,211.32
  6. Step 6: Final answer
    x = 350,508.03

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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.