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Finding the Fourth Proportional to 1,232,929.78, 1,849,072.78 and 368,161.28

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Solution

The fourth proportional to 1,232,929.78, 1,849,072.78 and 368,161.28 is: 552,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232,929.78 : 1,849,072.78 = 368,161.28 : x
  2. Step 2: Convert to fraction form
    1,232,929.78/1,849,072.78 = 368,161.28/x
  3. Step 3: Cross multiply
    1,232,929.78x = 1,849,072.78 × 368,161.28
  4. Step 4: Simplify right side
    1,232,929.78x = 680,757,001,497.96
  5. Step 5: Solve for x
    x = 680,757,001,497.96/1,232,929.78
  6. Step 6: Final answer
    x = 552,145.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.