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Finding the Fourth Proportional to 1,890,762.81, 2,608,509.11 and 1,164,349.39

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Solution

The fourth proportional to 1,890,762.81, 2,608,509.11 and 1,164,349.39 is: 1,606,344.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,762.81 : 2,608,509.11 = 1,164,349.39 : x
  2. Step 2: Convert to fraction form
    1,890,762.81/2,608,509.11 = 1,164,349.39/x
  3. Step 3: Cross multiply
    1,890,762.81x = 2,608,509.11 × 1,164,349.39
  4. Step 4: Simplify right side
    1,890,762.81x = 3,037,215,991,037.94
  5. Step 5: Solve for x
    x = 3,037,215,991,037.94/1,890,762.81
  6. Step 6: Final answer
    x = 1,606,344.27

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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.