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Finding the Fourth Proportional to 553,751.12, 764,192.41 and 312,020.39

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Solution

The fourth proportional to 553,751.12, 764,192.41 and 312,020.39 is: 430,597.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,751.12 : 764,192.41 = 312,020.39 : x
  2. Step 2: Convert to fraction form
    553,751.12/764,192.41 = 312,020.39/x
  3. Step 3: Cross multiply
    553,751.12x = 764,192.41 × 312,020.39
  4. Step 4: Simplify right side
    553,751.12x = 238,443,613,803.24
  5. Step 5: Solve for x
    x = 238,443,613,803.24/553,751.12
  6. Step 6: Final answer
    x = 430,597.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.