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Finding the Fourth Proportional to 211,109,110.40, 316,663,665.60 and 211,109,110.40

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Solution

The fourth proportional to 211,109,110.40, 316,663,665.60 and 211,109,110.40 is: 316,663,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,109,110.40 : 316,663,665.60 = 211,109,110.40 : x
  2. Step 2: Convert to fraction form
    211,109,110.40/316,663,665.60 = 211,109,110.40/x
  3. Step 3: Cross multiply
    211,109,110.40x = 316,663,665.60 × 211,109,110.40
  4. Step 4: Simplify right side
    211,109,110.40x = 66,850,584,740,819,088
  5. Step 5: Solve for x
    x = 66,850,584,740,819,088/211,109,110.40
  6. Step 6: Final answer
    x = 316,663,665.60

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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.