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Finding the Fourth Proportional to 31,111,307.40, 43,455,053.40 and 31,111,307.40

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Solution

The fourth proportional to 31,111,307.40, 43,455,053.40 and 31,111,307.40 is: 43,455,053.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,111,307.40 : 43,455,053.40 = 31,111,307.40 : x
  2. Step 2: Convert to fraction form
    31,111,307.40/43,455,053.40 = 31,111,307.40/x
  3. Step 3: Cross multiply
    31,111,307.40x = 43,455,053.40 × 31,111,307.40
  4. Step 4: Simplify right side
    31,111,307.40x = 1,351,943,524,410,815
  5. Step 5: Solve for x
    x = 1,351,943,524,410,815/31,111,307.40
  6. Step 6: Final answer
    x = 43,455,053.40

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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.