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Finding the Fourth Proportional to 111,592.88, 153,989.04 and 61,291.84

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Solution

The fourth proportional to 111,592.88, 153,989.04 and 61,291.84 is: 84,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,592.88 : 153,989.04 = 61,291.84 : x
  2. Step 2: Convert to fraction form
    111,592.88/153,989.04 = 61,291.84/x
  3. Step 3: Cross multiply
    111,592.88x = 153,989.04 × 61,291.84
  4. Step 4: Simplify right side
    111,592.88x = 9,438,271,601.43
  5. Step 5: Solve for x
    x = 9,438,271,601.43/111,592.88
  6. Step 6: Final answer
    x = 84,577.72

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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.