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Finding the Fourth Proportional to 316,386,017.05, 443,242,754.75 and 316,386,017.05

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Solution

The fourth proportional to 316,386,017.05, 443,242,754.75 and 316,386,017.05 is: 443,242,754.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,386,017.05 : 443,242,754.75 = 316,386,017.05 : x
  2. Step 2: Convert to fraction form
    316,386,017.05/443,242,754.75 = 316,386,017.05/x
  3. Step 3: Cross multiply
    316,386,017.05x = 443,242,754.75 × 316,386,017.05
  4. Step 4: Simplify right side
    316,386,017.05x = 140,235,809,761,622,480
  5. Step 5: Solve for x
    x = 140,235,809,761,622,480/316,386,017.05
  6. Step 6: Final answer
    x = 443,242,754.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.