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Finding the Fourth Proportional to 99,072,572.80, 148,608,859.20 and 34,354,868.80

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Solution

The fourth proportional to 99,072,572.80, 148,608,859.20 and 34,354,868.80 is: 51,532,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,072,572.80 : 148,608,859.20 = 34,354,868.80 : x
  2. Step 2: Convert to fraction form
    99,072,572.80/148,608,859.20 = 34,354,868.80/x
  3. Step 3: Cross multiply
    99,072,572.80x = 148,608,859.20 × 34,354,868.80
  4. Step 4: Simplify right side
    99,072,572.80x = 5,105,437,860,333,672
  5. Step 5: Solve for x
    x = 5,105,437,860,333,672/99,072,572.80
  6. Step 6: Final answer
    x = 51,532,303.20

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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.