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Finding the Fourth Proportional to 83,992,989.80, 125,989,484.70 and 23,408,715.80

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Solution

The fourth proportional to 83,992,989.80, 125,989,484.70 and 23,408,715.80 is: 35,113,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,992,989.80 : 125,989,484.70 = 23,408,715.80 : x
  2. Step 2: Convert to fraction form
    83,992,989.80/125,989,484.70 = 23,408,715.80/x
  3. Step 3: Cross multiply
    83,992,989.80x = 125,989,484.70 × 23,408,715.80
  4. Step 4: Simplify right side
    83,992,989.80x = 2,949,252,041,130,748.50
  5. Step 5: Solve for x
    x = 2,949,252,041,130,748.50/83,992,989.80
  6. Step 6: Final answer
    x = 35,113,073.70

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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.