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Finding the Fourth Proportional to 1,937,669.78, 2,906,512.51 and 784,938.15

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Solution

The fourth proportional to 1,937,669.78, 2,906,512.51 and 784,938.15 is: 1,177,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937,669.78 : 2,906,512.51 = 784,938.15 : x
  2. Step 2: Convert to fraction form
    1,937,669.78/2,906,512.51 = 784,938.15/x
  3. Step 3: Cross multiply
    1,937,669.78x = 2,906,512.51 × 784,938.15
  4. Step 4: Simplify right side
    1,937,669.78x = 2,281,432,562,442.88
  5. Step 5: Solve for x
    x = 2,281,432,562,442.88/1,937,669.78
  6. Step 6: Final answer
    x = 1,177,410.40

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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.