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Finding the Fourth Proportional to 65,239.40, 97,859.10 and 38,995.40

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Solution

The fourth proportional to 65,239.40, 97,859.10 and 38,995.40 is: 58,493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,239.40 : 97,859.10 = 38,995.40 : x
  2. Step 2: Convert to fraction form
    65,239.40/97,859.10 = 38,995.40/x
  3. Step 3: Cross multiply
    65,239.40x = 97,859.10 × 38,995.40
  4. Step 4: Simplify right side
    65,239.40x = 3,816,054,748.14
  5. Step 5: Solve for x
    x = 3,816,054,748.14/65,239.40
  6. Step 6: Final answer
    x = 58,493.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.