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Finding the Fourth Proportional to 90,724,285.80, 135,897,471.90 and 90,724,285.80

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Solution

The fourth proportional to 90,724,285.80, 135,897,471.90 and 90,724,285.80 is: 135,897,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724,285.80 : 135,897,471.90 = 90,724,285.80 : x
  2. Step 2: Convert to fraction form
    90,724,285.80/135,897,471.90 = 90,724,285.80/x
  3. Step 3: Cross multiply
    90,724,285.80x = 135,897,471.90 × 90,724,285.80
  4. Step 4: Simplify right side
    90,724,285.80x = 12,329,201,080,153,070
  5. Step 5: Solve for x
    x = 12,329,201,080,153,070/90,724,285.80
  6. Step 6: Final answer
    x = 135,897,471.90

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1.5x scale

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.