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Finding the Fourth Proportional to 64,897,103.80, 97,345,655.70 and 39,366,940.60

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Solution

The fourth proportional to 64,897,103.80, 97,345,655.70 and 39,366,940.60 is: 59,050,410.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,897,103.80 : 97,345,655.70 = 39,366,940.60 : x
  2. Step 2: Convert to fraction form
    64,897,103.80/97,345,655.70 = 39,366,940.60/x
  3. Step 3: Cross multiply
    64,897,103.80x = 97,345,655.70 × 39,366,940.60
  4. Step 4: Simplify right side
    64,897,103.80x = 3,832,200,645,609,951.50
  5. Step 5: Solve for x
    x = 3,832,200,645,609,951.50/64,897,103.80
  6. Step 6: Final answer
    x = 59,050,410.90

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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.