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Finding the Fourth Proportional to 149,113.04, 205,775.88 and 85,447.76

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Solution

The fourth proportional to 149,113.04, 205,775.88 and 85,447.76 is: 117,917.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,113.04 : 205,775.88 = 85,447.76 : x
  2. Step 2: Convert to fraction form
    149,113.04/205,775.88 = 85,447.76/x
  3. Step 3: Cross multiply
    149,113.04x = 205,775.88 × 85,447.76
  4. Step 4: Simplify right side
    149,113.04x = 17,583,088,008.03
  5. Step 5: Solve for x
    x = 17,583,088,008.03/149,113.04
  6. Step 6: Final answer
    x = 117,917.84

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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.