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Finding the Fourth Proportional to 191,397,806.80, 287,163,065.40 and 83,769,672.40

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Solution

The fourth proportional to 191,397,806.80, 287,163,065.40 and 83,769,672.40 is: 125,683,550.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,397,806.80 : 287,163,065.40 = 83,769,672.40 : x
  2. Step 2: Convert to fraction form
    191,397,806.80/287,163,065.40 = 83,769,672.40/x
  3. Step 3: Cross multiply
    191,397,806.80x = 287,163,065.40 × 83,769,672.40
  4. Step 4: Simplify right side
    191,397,806.80x = 24,055,555,913,937,776
  5. Step 5: Solve for x
    x = 24,055,555,913,937,776/191,397,806.80
  6. Step 6: Final answer
    x = 125,683,550.49

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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.