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Finding the Fourth Proportional to 1,927,441.86, 2,889,128.25 and 646,835.10

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Solution

The fourth proportional to 1,927,441.86, 2,889,128.25 and 646,835.10 is: 969,569.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927,441.86 : 2,889,128.25 = 646,835.10 : x
  2. Step 2: Convert to fraction form
    1,927,441.86/2,889,128.25 = 646,835.10/x
  3. Step 3: Cross multiply
    1,927,441.86x = 2,889,128.25 × 646,835.10
  4. Step 4: Simplify right side
    1,927,441.86x = 1,868,789,560,501.58
  5. Step 5: Solve for x
    x = 1,868,789,560,501.58/1,927,441.86
  6. Step 6: Final answer
    x = 969,569.87

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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.