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Finding the Fourth Proportional to 70,855.21, 97,784.62 and 39,024.10

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Solution

The fourth proportional to 70,855.21, 97,784.62 and 39,024.10 is: 53,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,855.21 : 97,784.62 = 39,024.10 : x
  2. Step 2: Convert to fraction form
    70,855.21/97,784.62 = 39,024.10/x
  3. Step 3: Cross multiply
    70,855.21x = 97,784.62 × 39,024.10
  4. Step 4: Simplify right side
    70,855.21x = 3,815,956,789.34
  5. Step 5: Solve for x
    x = 3,815,956,789.34/70,855.21
  6. Step 6: Final answer
    x = 53,855.70

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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.