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Finding the Fourth Proportional to 28,666,311.30, 40,246,209.90 and 28,666,311.30

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Solution

The fourth proportional to 28,666,311.30, 40,246,209.90 and 28,666,311.30 is: 40,246,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666,311.30 : 40,246,209.90 = 28,666,311.30 : x
  2. Step 2: Convert to fraction form
    28,666,311.30/40,246,209.90 = 28,666,311.30/x
  3. Step 3: Cross multiply
    28,666,311.30x = 40,246,209.90 × 28,666,311.30
  4. Step 4: Simplify right side
    28,666,311.30x = 1,153,710,381,638,541.75
  5. Step 5: Solve for x
    x = 1,153,710,381,638,541.75/28,666,311.30
  6. Step 6: Final answer
    x = 40,246,209.90

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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.