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Finding the Fourth Proportional to 10,959,053.20, 15,376,266.80 and 10,959,053.20

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Solution

The fourth proportional to 10,959,053.20, 15,376,266.80 and 10,959,053.20 is: 15,376,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959,053.20 : 15,376,266.80 = 10,959,053.20 : x
  2. Step 2: Convert to fraction form
    10,959,053.20/15,376,266.80 = 10,959,053.20/x
  3. Step 3: Cross multiply
    10,959,053.20x = 15,376,266.80 × 10,959,053.20
  4. Step 4: Simplify right side
    10,959,053.20x = 168,509,325,878,593.75
  5. Step 5: Solve for x
    x = 168,509,325,878,593.75/10,959,053.20
  6. Step 6: Final answer
    x = 15,376,266.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.