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Finding the Fourth Proportional to 191,783,710.80, 287,344,891.80 and 89,337,632.40

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Solution

The fourth proportional to 191,783,710.80, 287,344,891.80 and 89,337,632.40 is: 133,852,412.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,783,710.80 : 287,344,891.80 = 89,337,632.40 : x
  2. Step 2: Convert to fraction form
    191,783,710.80/287,344,891.80 = 89,337,632.40/x
  3. Step 3: Cross multiply
    191,783,710.80x = 287,344,891.80 × 89,337,632.40
  4. Step 4: Simplify right side
    191,783,710.80x = 25,670,712,315,646,176
  5. Step 5: Solve for x
    x = 25,670,712,315,646,176/191,783,710.80
  6. Step 6: Final answer
    x = 133,852,412.22

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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.