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Finding the Fourth Proportional to 64,791,845.80, 97,189,323.90 and 19,355,122.60

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Solution

The fourth proportional to 64,791,845.80, 97,189,323.90 and 19,355,122.60 is: 29,033,148.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,791,845.80 : 97,189,323.90 = 19,355,122.60 : x
  2. Step 2: Convert to fraction form
    64,791,845.80/97,189,323.90 = 19,355,122.60/x
  3. Step 3: Cross multiply
    64,791,845.80x = 97,189,323.90 × 19,355,122.60
  4. Step 4: Simplify right side
    64,791,845.80x = 1,881,111,279,495,610.50
  5. Step 5: Solve for x
    x = 1,881,111,279,495,610.50/64,791,845.80
  6. Step 6: Final answer
    x = 29,033,148.48

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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.