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Finding the Fourth Proportional to 86,508.59, 129,615.24 and 46,994.95

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Solution

The fourth proportional to 86,508.59, 129,615.24 and 46,994.95 is: 70,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508.59 : 129,615.24 = 46,994.95 : x
  2. Step 2: Convert to fraction form
    86,508.59/129,615.24 = 46,994.95/x
  3. Step 3: Cross multiply
    86,508.59x = 129,615.24 × 46,994.95
  4. Step 4: Simplify right side
    86,508.59x = 6,091,261,074.96
  5. Step 5: Solve for x
    x = 6,091,261,074.96/86,508.59
  6. Step 6: Final answer
    x = 70,412.21

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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.