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Finding the Fourth Proportional to 84,912.60, 117,055.90 and 59,339.57

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Solution

The fourth proportional to 84,912.60, 117,055.90 and 59,339.57 is: 81,802.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912.60 : 117,055.90 = 59,339.57 : x
  2. Step 2: Convert to fraction form
    84,912.60/117,055.90 = 59,339.57/x
  3. Step 3: Cross multiply
    84,912.60x = 117,055.90 × 59,339.57
  4. Step 4: Simplify right side
    84,912.60x = 6,946,046,585.51
  5. Step 5: Solve for x
    x = 6,946,046,585.51/84,912.60
  6. Step 6: Final answer
    x = 81,802.30

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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.