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Finding the Fourth Proportional to 417,700.78, 576,420.78 and 236,447.08

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Solution

The fourth proportional to 417,700.78, 576,420.78 and 236,447.08 is: 326,293.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,700.78 : 576,420.78 = 236,447.08 : x
  2. Step 2: Convert to fraction form
    417,700.78/576,420.78 = 236,447.08/x
  3. Step 3: Cross multiply
    417,700.78x = 576,420.78 × 236,447.08
  4. Step 4: Simplify right side
    417,700.78x = 136,293,010,282.32
  5. Step 5: Solve for x
    x = 136,293,010,282.32/417,700.78
  6. Step 6: Final answer
    x = 326,293.41

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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.