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Finding the Fourth Proportional to 66,779,923.20, 100,169,884.80 and 49,561,234.80

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Solution

The fourth proportional to 66,779,923.20, 100,169,884.80 and 49,561,234.80 is: 74,341,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,779,923.20 : 100,169,884.80 = 49,561,234.80 : x
  2. Step 2: Convert to fraction form
    66,779,923.20/100,169,884.80 = 49,561,234.80/x
  3. Step 3: Cross multiply
    66,779,923.20x = 100,169,884.80 × 49,561,234.80
  4. Step 4: Simplify right side
    66,779,923.20x = 4,964,543,180,461,751
  5. Step 5: Solve for x
    x = 4,964,543,180,461,751/66,779,923.20
  6. Step 6: Final answer
    x = 74,341,852.20

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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.