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Finding the Fourth Proportional to 70,657,059.20, 105,836,289.60 and 70,657,059.20

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Solution

The fourth proportional to 70,657,059.20, 105,836,289.60 and 70,657,059.20 is: 105,836,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,657,059.20 : 105,836,289.60 = 70,657,059.20 : x
  2. Step 2: Convert to fraction form
    70,657,059.20/105,836,289.60 = 70,657,059.20/x
  3. Step 3: Cross multiply
    70,657,059.20x = 105,836,289.60 × 70,657,059.20
  4. Step 4: Simplify right side
    70,657,059.20x = 7,478,080,979,775,544
  5. Step 5: Solve for x
    x = 7,478,080,979,775,544/70,657,059.20
  6. Step 6: Final answer
    x = 105,836,289.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.