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Finding the Fourth Proportional to 51,807,862.70, 72,637,176.10 and 51,807,862.70

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Solution

The fourth proportional to 51,807,862.70, 72,637,176.10 and 51,807,862.70 is: 72,637,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,807,862.70 : 72,637,176.10 = 51,807,862.70 : x
  2. Step 2: Convert to fraction form
    51,807,862.70/72,637,176.10 = 51,807,862.70/x
  3. Step 3: Cross multiply
    51,807,862.70x = 72,637,176.10 × 51,807,862.70
  4. Step 4: Simplify right side
    51,807,862.70x = 3,763,176,846,304,521.50
  5. Step 5: Solve for x
    x = 3,763,176,846,304,521.50/51,807,862.70
  6. Step 6: Final answer
    x = 72,637,176.10

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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.