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Finding the Fourth Proportional to 280,168.82, 386,522.90 and 172,552.08

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Solution

The fourth proportional to 280,168.82, 386,522.90 and 172,552.08 is: 238,054.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,168.82 : 386,522.90 = 172,552.08 : x
  2. Step 2: Convert to fraction form
    280,168.82/386,522.90 = 172,552.08/x
  3. Step 3: Cross multiply
    280,168.82x = 386,522.90 × 172,552.08
  4. Step 4: Simplify right side
    280,168.82x = 66,695,330,362.63
  5. Step 5: Solve for x
    x = 66,695,330,362.63/280,168.82
  6. Step 6: Final answer
    x = 238,054.08

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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.