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Finding the Fourth Proportional to 1,260,448.86, 1,739,566.49 and 716,666.13

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Solution

The fourth proportional to 1,260,448.86, 1,739,566.49 and 716,666.13 is: 989,082.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,448.86 : 1,739,566.49 = 716,666.13 : x
  2. Step 2: Convert to fraction form
    1,260,448.86/1,739,566.49 = 716,666.13/x
  3. Step 3: Cross multiply
    1,260,448.86x = 1,739,566.49 × 716,666.13
  4. Step 4: Simplify right side
    1,260,448.86x = 1,246,688,384,265.98
  5. Step 5: Solve for x
    x = 1,246,688,384,265.98/1,260,448.86
  6. Step 6: Final answer
    x = 989,082.88

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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.