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Finding the Fourth Proportional to 191,866,954.86, 287,672,594.85 and 105,645,967.02

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Solution

The fourth proportional to 191,866,954.86, 287,672,594.85 and 105,645,967.02 is: 158,398,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,866,954.86 : 287,672,594.85 = 105,645,967.02 : x
  2. Step 2: Convert to fraction form
    191,866,954.86/287,672,594.85 = 105,645,967.02/x
  3. Step 3: Cross multiply
    191,866,954.86x = 287,672,594.85 × 105,645,967.02
  4. Step 4: Simplify right side
    191,866,954.86x = 30,391,449,468,080,924
  5. Step 5: Solve for x
    x = 30,391,449,468,080,924/191,866,954.86
  6. Step 6: Final answer
    x = 158,398,560.56

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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.