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Finding the Fourth Proportional to 65,285,085.80, 97,843,647.90 and 39,698,935.40

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Solution

The fourth proportional to 65,285,085.80, 97,843,647.90 and 39,698,935.40 is: 59,497,335.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,285,085.80 : 97,843,647.90 = 39,698,935.40 : x
  2. Step 2: Convert to fraction form
    65,285,085.80/97,843,647.90 = 39,698,935.40/x
  3. Step 3: Cross multiply
    65,285,085.80x = 97,843,647.90 × 39,698,935.40
  4. Step 4: Simplify right side
    65,285,085.80x = 3,884,288,657,282,446
  5. Step 5: Solve for x
    x = 3,884,288,657,282,446/65,285,085.80
  6. Step 6: Final answer
    x = 59,497,335.57

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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.