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Finding the Fourth Proportional to 554,417.14, 764,921 and 339,332.98

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Solution

The fourth proportional to 554,417.14, 764,921 and 339,332.98 is: 468,172.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,417.14 : 764,921 = 339,332.98 : x
  2. Step 2: Convert to fraction form
    554,417.14/764,921 = 339,332.98/x
  3. Step 3: Cross multiply
    554,417.14x = 764,921 × 339,332.98
  4. Step 4: Simplify right side
    554,417.14x = 259,562,922,394.58
  5. Step 5: Solve for x
    x = 259,562,922,394.58/554,417.14
  6. Step 6: Final answer
    x = 468,172.62

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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.