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Finding the Fourth Proportional to 147,019,976.40, 220,194,041.40 and 86,553,800.40

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Solution

The fourth proportional to 147,019,976.40, 220,194,041.40 and 86,553,800.40 is: 129,632,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,019,976.40 : 220,194,041.40 = 86,553,800.40 : x
  2. Step 2: Convert to fraction form
    147,019,976.40/220,194,041.40 = 86,553,800.40/x
  3. Step 3: Cross multiply
    147,019,976.40x = 220,194,041.40 × 86,553,800.40
  4. Step 4: Simplify right side
    147,019,976.40x = 19,058,631,108,604,940
  5. Step 5: Solve for x
    x = 19,058,631,108,604,940/147,019,976.40
  6. Step 6: Final answer
    x = 129,632,935.44

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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.