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Finding the Fourth Proportional to 92,791,649.70, 139,152,045.15 and 28,073,945.70

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Solution

The fourth proportional to 92,791,649.70, 139,152,045.15 and 28,073,945.70 is: 42,100,199.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,791,649.70 : 139,152,045.15 = 28,073,945.70 : x
  2. Step 2: Convert to fraction form
    92,791,649.70/139,152,045.15 = 28,073,945.70/x
  3. Step 3: Cross multiply
    92,791,649.70x = 139,152,045.15 × 28,073,945.70
  4. Step 4: Simplify right side
    92,791,649.70x = 3,906,546,959,585,048.50
  5. Step 5: Solve for x
    x = 3,906,546,959,585,048.50/92,791,649.70
  6. Step 6: Final answer
    x = 42,100,199.45

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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.