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Finding the Fourth Proportional to 64,793,019.20, 97,190,680.80 and 19,355,374.40

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Solution

The fourth proportional to 64,793,019.20, 97,190,680.80 and 19,355,374.40 is: 29,033,405.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,793,019.20 : 97,190,680.80 = 19,355,374.40 : x
  2. Step 2: Convert to fraction form
    64,793,019.20/97,190,680.80 = 19,355,374.40/x
  3. Step 3: Cross multiply
    64,793,019.20x = 97,190,680.80 × 19,355,374.40
  4. Step 4: Simplify right side
    64,793,019.20x = 1,881,162,015,074,891.25
  5. Step 5: Solve for x
    x = 1,881,162,015,074,891.25/64,793,019.20
  6. Step 6: Final answer
    x = 29,033,405.73

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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.