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Finding the Fourth Proportional to 403,010.93, 556,155.11 and 221,718.98

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Solution

The fourth proportional to 403,010.93, 556,155.11 and 221,718.98 is: 305,972.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,010.93 : 556,155.11 = 221,718.98 : x
  2. Step 2: Convert to fraction form
    403,010.93/556,155.11 = 221,718.98/x
  3. Step 3: Cross multiply
    403,010.93x = 556,155.11 × 221,718.98
  4. Step 4: Simplify right side
    403,010.93x = 123,310,143,710.99
  5. Step 5: Solve for x
    x = 123,310,143,710.99/403,010.93
  6. Step 6: Final answer
    x = 305,972.21

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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.