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Finding the Fourth Proportional to 668,097.78, 922,012.65 and 396,326.58

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Solution

The fourth proportional to 668,097.78, 922,012.65 and 396,326.58 is: 546,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,097.78 : 922,012.65 = 396,326.58 : x
  2. Step 2: Convert to fraction form
    668,097.78/922,012.65 = 396,326.58/x
  3. Step 3: Cross multiply
    668,097.78x = 922,012.65 × 396,326.58
  4. Step 4: Simplify right side
    668,097.78x = 365,418,120,291.24
  5. Step 5: Solve for x
    x = 365,418,120,291.24/668,097.78
  6. Step 6: Final answer
    x = 546,953.05

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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.