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Finding the Fourth Proportional to 65,264,808.80, 97,897,213.20 and 19,820,698.40

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Solution

The fourth proportional to 65,264,808.80, 97,897,213.20 and 19,820,698.40 is: 29,731,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,264,808.80 : 97,897,213.20 = 19,820,698.40 : x
  2. Step 2: Convert to fraction form
    65,264,808.80/97,897,213.20 = 19,820,698.40/x
  3. Step 3: Cross multiply
    65,264,808.80x = 97,897,213.20 × 19,820,698.40
  4. Step 4: Simplify right side
    65,264,808.80x = 1,940,391,137,037,698.75
  5. Step 5: Solve for x
    x = 1,940,391,137,037,698.75/65,264,808.80
  6. Step 6: Final answer
    x = 29,731,047.60

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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.