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Finding the Fourth Proportional to 1,953,041.78, 2,934,065.20 and 1,872,330.54

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Solution

The fourth proportional to 1,953,041.78, 2,934,065.20 and 1,872,330.54 is: 2,812,812.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953,041.78 : 2,934,065.20 = 1,872,330.54 : x
  2. Step 2: Convert to fraction form
    1,953,041.78/2,934,065.20 = 1,872,330.54/x
  3. Step 3: Cross multiply
    1,953,041.78x = 2,934,065.20 × 1,872,330.54
  4. Step 4: Simplify right side
    1,953,041.78x = 5,493,539,875,630.38
  5. Step 5: Solve for x
    x = 5,493,539,875,630.38/1,953,041.78
  6. Step 6: Final answer
    x = 2,812,812.27

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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.