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Finding the Fourth Proportional to 1,175,478.40, 1,761,662.40 and 1,041,731.20

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Solution

The fourth proportional to 1,175,478.40, 1,761,662.40 and 1,041,731.20 is: 1,561,218.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175,478.40 : 1,761,662.40 = 1,041,731.20 : x
  2. Step 2: Convert to fraction form
    1,175,478.40/1,761,662.40 = 1,041,731.20/x
  3. Step 3: Cross multiply
    1,175,478.40x = 1,761,662.40 × 1,041,731.20
  4. Step 4: Simplify right side
    1,175,478.40x = 1,835,178,685,946.88
  5. Step 5: Solve for x
    x = 1,835,178,685,946.88/1,175,478.40
  6. Step 6: Final answer
    x = 1,561,218.55

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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.