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Finding the Fourth Proportional to 2,115,342,085.80, 3,173,013,128.70 and 2,115,342,085.80

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Solution

The fourth proportional to 2,115,342,085.80, 3,173,013,128.70 and 2,115,342,085.80 is: 3,173,013,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,342,085.80 : 3,173,013,128.70 = 2,115,342,085.80 : x
  2. Step 2: Convert to fraction form
    2,115,342,085.80/3,173,013,128.70 = 2,115,342,085.80/x
  3. Step 3: Cross multiply
    2,115,342,085.80x = 3,173,013,128.70 × 2,115,342,085.80
  4. Step 4: Simplify right side
    2,115,342,085.80x = 6,712,008,209,935,041,536
  5. Step 5: Solve for x
    x = 6,712,008,209,935,041,536/2,115,342,085.80
  6. Step 6: Final answer
    x = 3,173,013,128.70

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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.