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Finding the Fourth Proportional to 65,202,965.80, 97,804,448.70 and 19,758,855.40

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Solution

The fourth proportional to 65,202,965.80, 97,804,448.70 and 19,758,855.40 is: 29,638,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,202,965.80 : 97,804,448.70 = 19,758,855.40 : x
  2. Step 2: Convert to fraction form
    65,202,965.80/97,804,448.70 = 19,758,855.40/x
  3. Step 3: Cross multiply
    65,202,965.80x = 97,804,448.70 × 19,758,855.40
  4. Step 4: Simplify right side
    65,202,965.80x = 1,932,503,959,340,018
  5. Step 5: Solve for x
    x = 1,932,503,959,340,018/65,202,965.80
  6. Step 6: Final answer
    x = 29,638,283.10

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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.