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Finding the Fourth Proportional to 70,351,904.60, 97,085,637.56 and 38,991,978.21

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Solution

The fourth proportional to 70,351,904.60, 97,085,637.56 and 38,991,978.21 is: 53,808,935.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,351,904.60 : 97,085,637.56 = 38,991,978.21 : x
  2. Step 2: Convert to fraction form
    70,351,904.60/97,085,637.56 = 38,991,978.21/x
  3. Step 3: Cross multiply
    70,351,904.60x = 97,085,637.56 × 38,991,978.21
  4. Step 4: Simplify right side
    70,351,904.60x = 3,785,561,063,758,049.50
  5. Step 5: Solve for x
    x = 3,785,561,063,758,049.50/70,351,904.60
  6. Step 6: Final answer
    x = 53,808,935.03

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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.