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Finding the Fourth Proportional to 403,970.01, 557,482.43 and 222,688.43

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Solution

The fourth proportional to 403,970.01, 557,482.43 and 222,688.43 is: 307,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,970.01 : 557,482.43 = 222,688.43 : x
  2. Step 2: Convert to fraction form
    403,970.01/557,482.43 = 222,688.43/x
  3. Step 3: Cross multiply
    403,970.01x = 557,482.43 × 222,688.43
  4. Step 4: Simplify right side
    403,970.01x = 124,144,887,369.55
  5. Step 5: Solve for x
    x = 124,144,887,369.55/403,970.01
  6. Step 6: Final answer
    x = 307,312.14

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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.