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Finding the Fourth Proportional to 117,907.62, 162,712.12 and 64,192.63

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Solution

The fourth proportional to 117,907.62, 162,712.12 and 64,192.63 is: 88,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,907.62 : 162,712.12 = 64,192.63 : x
  2. Step 2: Convert to fraction form
    117,907.62/162,712.12 = 64,192.63/x
  3. Step 3: Cross multiply
    117,907.62x = 162,712.12 × 64,192.63
  4. Step 4: Simplify right side
    117,907.62x = 10,444,918,135.69
  5. Step 5: Solve for x
    x = 10,444,918,135.69/117,907.62
  6. Step 6: Final answer
    x = 88,585.60

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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.