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Finding the Fourth Proportional to 86,896,844.40, 121,995,704.40 and 86,896,844.40

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Solution

The fourth proportional to 86,896,844.40, 121,995,704.40 and 86,896,844.40 is: 121,995,704.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,896,844.40 : 121,995,704.40 = 86,896,844.40 : x
  2. Step 2: Convert to fraction form
    86,896,844.40/121,995,704.40 = 86,896,844.40/x
  3. Step 3: Cross multiply
    86,896,844.40x = 121,995,704.40 × 86,896,844.40
  4. Step 4: Simplify right side
    86,896,844.40x = 10,601,041,742,715,196
  5. Step 5: Solve for x
    x = 10,601,041,742,715,196/86,896,844.40
  6. Step 6: Final answer
    x = 121,995,704.40

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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.