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Finding the Fourth Proportional to 76,655,583, 105,783,739.02 and 43,615,728.36

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Solution

The fourth proportional to 76,655,583, 105,783,739.02 and 43,615,728.36 is: 60,189,155.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,655,583 : 105,783,739.02 = 43,615,728.36 : x
  2. Step 2: Convert to fraction form
    76,655,583/105,783,739.02 = 43,615,728.36/x
  3. Step 3: Cross multiply
    76,655,583x = 105,783,739.02 × 43,615,728.36
  4. Step 4: Simplify right side
    76,655,583x = 4,613,834,826,001,452
  5. Step 5: Solve for x
    x = 4,613,834,826,001,452/76,655,583
  6. Step 6: Final answer
    x = 60,189,155.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.