Home / 154,756,325.57-213,563,722.10-85,140,211.77

Finding the Fourth Proportional to 154,756,325.57, 213,563,722.10 and 85,140,211.77

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Solution

The fourth proportional to 154,756,325.57, 213,563,722.10 and 85,140,211.77 is: 117,493,488.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,756,325.57 : 213,563,722.10 = 85,140,211.77 : x
  2. Step 2: Convert to fraction form
    154,756,325.57/213,563,722.10 = 85,140,211.77/x
  3. Step 3: Cross multiply
    154,756,325.57x = 213,563,722.10 × 85,140,211.77
  4. Step 4: Simplify right side
    154,756,325.57x = 18,182,860,525,557,728
  5. Step 5: Solve for x
    x = 18,182,860,525,557,728/154,756,325.57
  6. Step 6: Final answer
    x = 117,493,488.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.