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Finding the Fourth Proportional to 10,959,509.70, 15,376,905.90 and 10,959,509.70

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Solution

The fourth proportional to 10,959,509.70, 15,376,905.90 and 10,959,509.70 is: 15,376,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959,509.70 : 15,376,905.90 = 10,959,509.70 : x
  2. Step 2: Convert to fraction form
    10,959,509.70/15,376,905.90 = 10,959,509.70/x
  3. Step 3: Cross multiply
    10,959,509.70x = 15,376,905.90 × 10,959,509.70
  4. Step 4: Simplify right side
    10,959,509.70x = 168,523,349,367,037.22
  5. Step 5: Solve for x
    x = 168,523,349,367,037.22/10,959,509.70
  6. Step 6: Final answer
    x = 15,376,905.90

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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.