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Finding the Fourth Proportional to 400,362.71, 552,476.70 and 219,038.54

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Solution

The fourth proportional to 400,362.71, 552,476.70 and 219,038.54 is: 302,260.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,362.71 : 552,476.70 = 219,038.54 : x
  2. Step 2: Convert to fraction form
    400,362.71/552,476.70 = 219,038.54/x
  3. Step 3: Cross multiply
    400,362.71x = 552,476.70 × 219,038.54
  4. Step 4: Simplify right side
    400,362.71x = 121,013,686,989.63
  5. Step 5: Solve for x
    x = 121,013,686,989.63/400,362.71
  6. Step 6: Final answer
    x = 302,260.14

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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.