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Finding the Fourth Proportional to 59,486.68, 81,885.54 and 51,416.60

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Solution

The fourth proportional to 59,486.68, 81,885.54 and 51,416.60 is: 70,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,486.68 : 81,885.54 = 51,416.60 : x
  2. Step 2: Convert to fraction form
    59,486.68/81,885.54 = 51,416.60/x
  3. Step 3: Cross multiply
    59,486.68x = 81,885.54 × 51,416.60
  4. Step 4: Simplify right side
    59,486.68x = 4,210,276,055.96
  5. Step 5: Solve for x
    x = 4,210,276,055.96/59,486.68
  6. Step 6: Final answer
    x = 70,776.79

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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.