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Finding the Fourth Proportional to 78,775.44, 108,707.40 and 46,927.80

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Solution

The fourth proportional to 78,775.44, 108,707.40 and 46,927.80 is: 64,758.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,775.44 : 108,707.40 = 46,927.80 : x
  2. Step 2: Convert to fraction form
    78,775.44/108,707.40 = 46,927.80/x
  3. Step 3: Cross multiply
    78,775.44x = 108,707.40 × 46,927.80
  4. Step 4: Simplify right side
    78,775.44x = 5,101,399,125.72
  5. Step 5: Solve for x
    x = 5,101,399,125.72/78,775.44
  6. Step 6: Final answer
    x = 64,758.75

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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.