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Finding the Fourth Proportional to 70,953.60, 106,300.80 and 57,734.40

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Solution

The fourth proportional to 70,953.60, 106,300.80 and 57,734.40 is: 86,496.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,953.60 : 106,300.80 = 57,734.40 : x
  2. Step 2: Convert to fraction form
    70,953.60/106,300.80 = 57,734.40/x
  3. Step 3: Cross multiply
    70,953.60x = 106,300.80 × 57,734.40
  4. Step 4: Simplify right side
    70,953.60x = 6,137,212,907.52
  5. Step 5: Solve for x
    x = 6,137,212,907.52/70,953.60
  6. Step 6: Final answer
    x = 86,496.15

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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.