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Finding the Fourth Proportional to 70,852,669.20, 106,297,666.20 and 25,409,725.20

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Solution

The fourth proportional to 70,852,669.20, 106,297,666.20 and 25,409,725.20 is: 38,121,280.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,852,669.20 : 106,297,666.20 = 25,409,725.20 : x
  2. Step 2: Convert to fraction form
    70,852,669.20/106,297,666.20 = 25,409,725.20/x
  3. Step 3: Cross multiply
    70,852,669.20x = 106,297,666.20 × 25,409,725.20
  4. Step 4: Simplify right side
    70,852,669.20x = 2,700,994,487,543,328
  5. Step 5: Solve for x
    x = 2,700,994,487,543,328/70,852,669.20
  6. Step 6: Final answer
    x = 38,121,280.65

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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.