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Finding the Fourth Proportional to 111,156.10, 153,381.13 and 63,406.60

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Solution

The fourth proportional to 111,156.10, 153,381.13 and 63,406.60 is: 87,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,156.10 : 153,381.13 = 63,406.60 : x
  2. Step 2: Convert to fraction form
    111,156.10/153,381.13 = 63,406.60/x
  3. Step 3: Cross multiply
    111,156.10x = 153,381.13 × 63,406.60
  4. Step 4: Simplify right side
    111,156.10x = 9,725,374,873.52
  5. Step 5: Solve for x
    x = 9,725,374,873.52/111,156.10
  6. Step 6: Final answer
    x = 87,492.95

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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.