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Finding the Fourth Proportional to 70,875.72, 97,807.68 and 39,043.98

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Solution

The fourth proportional to 70,875.72, 97,807.68 and 39,043.98 is: 53,880.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,875.72 : 97,807.68 = 39,043.98 : x
  2. Step 2: Convert to fraction form
    70,875.72/97,807.68 = 39,043.98/x
  3. Step 3: Cross multiply
    70,875.72x = 97,807.68 × 39,043.98
  4. Step 4: Simplify right side
    70,875.72x = 3,818,801,101.77
  5. Step 5: Solve for x
    x = 3,818,801,101.77/70,875.72
  6. Step 6: Final answer
    x = 53,880.24

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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.