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Finding the Fourth Proportional to 403,008.17, 556,151.31 and 221,716.22

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Solution

The fourth proportional to 403,008.17, 556,151.31 and 221,716.22 is: 305,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,008.17 : 556,151.31 = 221,716.22 : x
  2. Step 2: Convert to fraction form
    403,008.17/556,151.31 = 221,716.22/x
  3. Step 3: Cross multiply
    403,008.17x = 556,151.31 × 221,716.22
  4. Step 4: Simplify right side
    403,008.17x = 123,307,763,420.49
  5. Step 5: Solve for x
    x = 123,307,763,420.49/403,008.17
  6. Step 6: Final answer
    x = 305,968.40

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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.