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Finding the Fourth Proportional to 301,990.04, 416,628.24 and 172,859.48

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Solution

The fourth proportional to 301,990.04, 416,628.24 and 172,859.48 is: 238,478.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,990.04 : 416,628.24 = 172,859.48 : x
  2. Step 2: Convert to fraction form
    301,990.04/416,628.24 = 172,859.48/x
  3. Step 3: Cross multiply
    301,990.04x = 416,628.24 × 172,859.48
  4. Step 4: Simplify right side
    301,990.04x = 72,018,140,919.72
  5. Step 5: Solve for x
    x = 72,018,140,919.72/301,990.04
  6. Step 6: Final answer
    x = 238,478.53

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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.