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Finding the Fourth Proportional to 79,239,218.40, 110,708,157.60 and 79,239,218.40

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Solution

The fourth proportional to 79,239,218.40, 110,708,157.60 and 79,239,218.40 is: 110,708,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,239,218.40 : 110,708,157.60 = 79,239,218.40 : x
  2. Step 2: Convert to fraction form
    79,239,218.40/110,708,157.60 = 79,239,218.40/x
  3. Step 3: Cross multiply
    79,239,218.40x = 110,708,157.60 × 79,239,218.40
  4. Step 4: Simplify right side
    79,239,218.40x = 8,772,427,878,728,020
  5. Step 5: Solve for x
    x = 8,772,427,878,728,020/79,239,218.40
  6. Step 6: Final answer
    x = 110,708,157.60

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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.