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Finding the Fourth Proportional to 39,776,716.40, 55,838,568.40 and 39,776,716.40

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Solution

The fourth proportional to 39,776,716.40, 55,838,568.40 and 39,776,716.40 is: 55,838,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,776,716.40 : 55,838,568.40 = 39,776,716.40 : x
  2. Step 2: Convert to fraction form
    39,776,716.40/55,838,568.40 = 39,776,716.40/x
  3. Step 3: Cross multiply
    39,776,716.40x = 55,838,568.40 × 39,776,716.40
  4. Step 4: Simplify right side
    39,776,716.40x = 2,221,074,899,428,801.50
  5. Step 5: Solve for x
    x = 2,221,074,899,428,801.50/39,776,716.40
  6. Step 6: Final answer
    x = 55,838,568.40

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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.