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Finding the Fourth Proportional to 10,109,515.15, 14,178,515.45 and 10,109,515.15

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Solution

The fourth proportional to 10,109,515.15, 14,178,515.45 and 10,109,515.15 is: 14,178,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109,515.15 : 14,178,515.45 = 10,109,515.15 : x
  2. Step 2: Convert to fraction form
    10,109,515.15/14,178,515.45 = 10,109,515.15/x
  3. Step 3: Cross multiply
    10,109,515.15x = 14,178,515.45 × 10,109,515.15
  4. Step 4: Simplify right side
    10,109,515.15x = 143,337,916,746,284.06
  5. Step 5: Solve for x
    x = 143,337,916,746,284.06/10,109,515.15
  6. Step 6: Final answer
    x = 14,178,515.45

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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.