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Finding the Fourth Proportional to 131,406,390.20, 197,109,585.30 and 131,406,390.20

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Solution

The fourth proportional to 131,406,390.20, 197,109,585.30 and 131,406,390.20 is: 197,109,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,406,390.20 : 197,109,585.30 = 131,406,390.20 : x
  2. Step 2: Convert to fraction form
    131,406,390.20/197,109,585.30 = 131,406,390.20/x
  3. Step 3: Cross multiply
    131,406,390.20x = 197,109,585.30 × 131,406,390.20
  4. Step 4: Simplify right side
    131,406,390.20x = 25,901,459,078,091,988
  5. Step 5: Solve for x
    x = 25,901,459,078,091,988/131,406,390.20
  6. Step 6: Final answer
    x = 197,109,585.30

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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.