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Finding the Fourth Proportional to 75,382,801.20, 105,320,688.08 and 75,382,801.20

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Solution

The fourth proportional to 75,382,801.20, 105,320,688.08 and 75,382,801.20 is: 105,320,688.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,382,801.20 : 105,320,688.08 = 75,382,801.20 : x
  2. Step 2: Convert to fraction form
    75,382,801.20/105,320,688.08 = 75,382,801.20/x
  3. Step 3: Cross multiply
    75,382,801.20x = 105,320,688.08 × 75,382,801.20
  4. Step 4: Simplify right side
    75,382,801.20x = 7,939,368,491,404,936
  5. Step 5: Solve for x
    x = 7,939,368,491,404,936/75,382,801.20
  6. Step 6: Final answer
    x = 105,320,688.08

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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.