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Finding the Fourth Proportional to 70,995.90, 97,973.70 and 39,165.06

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Solution

The fourth proportional to 70,995.90, 97,973.70 and 39,165.06 is: 54,047.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,995.90 : 97,973.70 = 39,165.06 : x
  2. Step 2: Convert to fraction form
    70,995.90/97,973.70 = 39,165.06/x
  3. Step 3: Cross multiply
    70,995.90x = 97,973.70 × 39,165.06
  4. Step 4: Simplify right side
    70,995.90x = 3,837,145,838.92
  5. Step 5: Solve for x
    x = 3,837,145,838.92/70,995.90
  6. Step 6: Final answer
    x = 54,047.43

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1.5x scale

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.