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Finding the Fourth Proportional to 90,432,107.70, 126,775,011.90 and 90,432,107.70

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Solution

The fourth proportional to 90,432,107.70, 126,775,011.90 and 90,432,107.70 is: 126,775,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,432,107.70 : 126,775,011.90 = 90,432,107.70 : x
  2. Step 2: Convert to fraction form
    90,432,107.70/126,775,011.90 = 90,432,107.70/x
  3. Step 3: Cross multiply
    90,432,107.70x = 126,775,011.90 × 90,432,107.70
  4. Step 4: Simplify right side
    90,432,107.70x = 11,464,531,529,809,582
  5. Step 5: Solve for x
    x = 11,464,531,529,809,582/90,432,107.70
  6. Step 6: Final answer
    x = 126,775,011.90

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1.5x scale

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.