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Finding the Fourth Proportional to 67,691,702.40, 101,537,553.60 and 64,743,043.20

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Solution

The fourth proportional to 67,691,702.40, 101,537,553.60 and 64,743,043.20 is: 97,114,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,691,702.40 : 101,537,553.60 = 64,743,043.20 : x
  2. Step 2: Convert to fraction form
    67,691,702.40/101,537,553.60 = 64,743,043.20/x
  3. Step 3: Cross multiply
    67,691,702.40x = 101,537,553.60 × 64,743,043.20
  4. Step 4: Simplify right side
    67,691,702.40x = 6,573,850,219,147,115
  5. Step 5: Solve for x
    x = 6,573,850,219,147,115/67,691,702.40
  6. Step 6: Final answer
    x = 97,114,564.80

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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.