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Finding the Fourth Proportional to 86,570.42, 119,330.71 and 63,836.60

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Solution

The fourth proportional to 86,570.42, 119,330.71 and 63,836.60 is: 87,993.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,570.42 : 119,330.71 = 63,836.60 : x
  2. Step 2: Convert to fraction form
    86,570.42/119,330.71 = 63,836.60/x
  3. Step 3: Cross multiply
    86,570.42x = 119,330.71 × 63,836.60
  4. Step 4: Simplify right side
    86,570.42x = 7,617,666,045.74
  5. Step 5: Solve for x
    x = 7,617,666,045.74/86,570.42
  6. Step 6: Final answer
    x = 87,993.87

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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.