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Finding the Fourth Proportional to 68,013,521.80, 102,020,282.70 and 68,013,521.80

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Solution

The fourth proportional to 68,013,521.80, 102,020,282.70 and 68,013,521.80 is: 102,020,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,013,521.80 : 102,020,282.70 = 68,013,521.80 : x
  2. Step 2: Convert to fraction form
    68,013,521.80/102,020,282.70 = 68,013,521.80/x
  3. Step 3: Cross multiply
    68,013,521.80x = 102,020,282.70 × 68,013,521.80
  4. Step 4: Simplify right side
    68,013,521.80x = 6,938,758,721,458,613
  5. Step 5: Solve for x
    x = 6,938,758,721,458,613/68,013,521.80
  6. Step 6: Final answer
    x = 102,020,282.70

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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.