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Finding the Fourth Proportional to 143,526,809.80, 215,290,214.70 and 143,526,809.80

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Solution

The fourth proportional to 143,526,809.80, 215,290,214.70 and 143,526,809.80 is: 215,290,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,526,809.80 : 215,290,214.70 = 143,526,809.80 : x
  2. Step 2: Convert to fraction form
    143,526,809.80/215,290,214.70 = 143,526,809.80/x
  3. Step 3: Cross multiply
    143,526,809.80x = 215,290,214.70 × 143,526,809.80
  4. Step 4: Simplify right side
    143,526,809.80x = 30,899,917,697,048,064
  5. Step 5: Solve for x
    x = 30,899,917,697,048,064/143,526,809.80
  6. Step 6: Final answer
    x = 215,290,214.70

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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.