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Finding the Fourth Proportional to 1,147,800.87, 1,583,978.42 and 657,760.68

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Solution

The fourth proportional to 1,147,800.87, 1,583,978.42 and 657,760.68 is: 907,717.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,800.87 : 1,583,978.42 = 657,760.68 : x
  2. Step 2: Convert to fraction form
    1,147,800.87/1,583,978.42 = 657,760.68/x
  3. Step 3: Cross multiply
    1,147,800.87x = 1,583,978.42 × 657,760.68
  4. Step 4: Simplify right side
    1,147,800.87x = 1,041,878,724,288.93
  5. Step 5: Solve for x
    x = 1,041,878,724,288.93/1,147,800.87
  6. Step 6: Final answer
    x = 907,717.32

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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.