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Finding the Fourth Proportional to 70,908, 97,851.96 and 39,076.08

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Solution

The fourth proportional to 70,908, 97,851.96 and 39,076.08 is: 53,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,908 : 97,851.96 = 39,076.08 : x
  2. Step 2: Convert to fraction form
    70,908/97,851.96 = 39,076.08/x
  3. Step 3: Cross multiply
    70,908x = 97,851.96 × 39,076.08
  4. Step 4: Simplify right side
    70,908x = 3,823,671,017.12
  5. Step 5: Solve for x
    x = 3,823,671,017.12/70,908
  6. Step 6: Final answer
    x = 53,924.40

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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.