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Finding the Fourth Proportional to 70,855.66, 97,780.55 and 39,024.48

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Solution

The fourth proportional to 70,855.66, 97,780.55 and 39,024.48 is: 53,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,855.66 : 97,780.55 = 39,024.48 : x
  2. Step 2: Convert to fraction form
    70,855.66/97,780.55 = 39,024.48/x
  3. Step 3: Cross multiply
    70,855.66x = 97,780.55 × 39,024.48
  4. Step 4: Simplify right side
    70,855.66x = 3,815,835,117.86
  5. Step 5: Solve for x
    x = 3,815,835,117.86/70,855.66
  6. Step 6: Final answer
    x = 53,853.64

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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.