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Finding the Fourth Proportional to 128,806.65, 193,209.98 and 34,036.65

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Solution

The fourth proportional to 128,806.65, 193,209.98 and 34,036.65 is: 51,054.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,806.65 : 193,209.98 = 34,036.65 : x
  2. Step 2: Convert to fraction form
    128,806.65/193,209.98 = 34,036.65/x
  3. Step 3: Cross multiply
    128,806.65x = 193,209.98 × 34,036.65
  4. Step 4: Simplify right side
    128,806.65x = 6,576,220,295.58
  5. Step 5: Solve for x
    x = 6,576,220,295.58/128,806.65
  6. Step 6: Final answer
    x = 51,054.98

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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.