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Finding the Fourth Proportional to 620,652,272.41, 931,074,068.00 and 211,612,763.53

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Solution

The fourth proportional to 620,652,272.41, 931,074,068.00 and 211,612,763.53 is: 317,451,760.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,652,272.41 : 931,074,068.00 = 211,612,763.53 : x
  2. Step 2: Convert to fraction form
    620,652,272.41/931,074,068.00 = 211,612,763.53/x
  3. Step 3: Cross multiply
    620,652,272.41x = 931,074,068.00 × 211,612,763.53
  4. Step 4: Simplify right side
    620,652,272.41x = 197,027,156,581,100,640
  5. Step 5: Solve for x
    x = 197,027,156,581,100,640/620,652,272.41
  6. Step 6: Final answer
    x = 317,451,760.57

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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.