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Finding the Fourth Proportional to 403,409.58, 556,700.64 and 222,117.78

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Solution

The fourth proportional to 403,409.58, 556,700.64 and 222,117.78 is: 306,520.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,409.58 : 556,700.64 = 222,117.78 : x
  2. Step 2: Convert to fraction form
    403,409.58/556,700.64 = 222,117.78/x
  3. Step 3: Cross multiply
    403,409.58x = 556,700.64 × 222,117.78
  4. Step 4: Simplify right side
    403,409.58x = 123,653,110,281.38
  5. Step 5: Solve for x
    x = 123,653,110,281.38/403,409.58
  6. Step 6: Final answer
    x = 306,520.01

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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.