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Finding the Fourth Proportional to 70,639.74, 97,482.56 and 38,374.20

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Solution

The fourth proportional to 70,639.74, 97,482.56 and 38,374.20 is: 52,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,639.74 : 97,482.56 = 38,374.20 : x
  2. Step 2: Convert to fraction form
    70,639.74/97,482.56 = 38,374.20/x
  3. Step 3: Cross multiply
    70,639.74x = 97,482.56 × 38,374.20
  4. Step 4: Simplify right side
    70,639.74x = 3,740,815,062.08
  5. Step 5: Solve for x
    x = 3,740,815,062.08/70,639.74
  6. Step 6: Final answer
    x = 52,956.24

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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.