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Finding the Fourth Proportional to 73,488,679.80, 110,233,019.70 and 30,343,543.80

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Solution

The fourth proportional to 73,488,679.80, 110,233,019.70 and 30,343,543.80 is: 45,515,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,488,679.80 : 110,233,019.70 = 30,343,543.80 : x
  2. Step 2: Convert to fraction form
    73,488,679.80/110,233,019.70 = 30,343,543.80/x
  3. Step 3: Cross multiply
    73,488,679.80x = 110,233,019.70 × 30,343,543.80
  4. Step 4: Simplify right side
    73,488,679.80x = 3,344,860,461,473,213
  5. Step 5: Solve for x
    x = 3,344,860,461,473,213/73,488,679.80
  6. Step 6: Final answer
    x = 45,515,315.70

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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.