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Finding the Fourth Proportional to 47,479,530.90, 66,622,508.70 and 47,479,530.90

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Solution

The fourth proportional to 47,479,530.90, 66,622,508.70 and 47,479,530.90 is: 66,622,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,479,530.90 : 66,622,508.70 = 47,479,530.90 : x
  2. Step 2: Convert to fraction form
    47,479,530.90/66,622,508.70 = 47,479,530.90/x
  3. Step 3: Cross multiply
    47,479,530.90x = 66,622,508.70 × 47,479,530.90
  4. Step 4: Simplify right side
    47,479,530.90x = 3,163,205,460,457,169
  5. Step 5: Solve for x
    x = 3,163,205,460,457,169/47,479,530.90
  6. Step 6: Final answer
    x = 66,622,508.70

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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.