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Finding the Fourth Proportional to 64,651,766.35, 90,739,221.05 and 64,651,766.35

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Solution

The fourth proportional to 64,651,766.35, 90,739,221.05 and 64,651,766.35 is: 90,739,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,651,766.35 : 90,739,221.05 = 64,651,766.35 : x
  2. Step 2: Convert to fraction form
    64,651,766.35/90,739,221.05 = 64,651,766.35/x
  3. Step 3: Cross multiply
    64,651,766.35x = 90,739,221.05 × 64,651,766.35
  4. Step 4: Simplify right side
    64,651,766.35x = 5,866,450,918,105,602
  5. Step 5: Solve for x
    x = 5,866,450,918,105,602/64,651,766.35
  6. Step 6: Final answer
    x = 90,739,221.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.