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Finding the Fourth Proportional to 70,446.36, 97,218.99 and 42,146.58

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Solution

The fourth proportional to 70,446.36, 97,218.99 and 42,146.58 is: 58,164.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,446.36 : 97,218.99 = 42,146.58 : x
  2. Step 2: Convert to fraction form
    70,446.36/97,218.99 = 42,146.58/x
  3. Step 3: Cross multiply
    70,446.36x = 97,218.99 × 42,146.58
  4. Step 4: Simplify right side
    70,446.36x = 4,097,447,939.55
  5. Step 5: Solve for x
    x = 4,097,447,939.55/70,446.36
  6. Step 6: Final answer
    x = 58,164.08

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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.