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Finding the Fourth Proportional to 94,155, 129,945.42 and 54,411

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Solution

The fourth proportional to 94,155, 129,945.42 and 54,411 is: 75,093.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,155 : 129,945.42 = 54,411 : x
  2. Step 2: Convert to fraction form
    94,155/129,945.42 = 54,411/x
  3. Step 3: Cross multiply
    94,155x = 129,945.42 × 54,411
  4. Step 4: Simplify right side
    94,155x = 7,070,460,247.62
  5. Step 5: Solve for x
    x = 7,070,460,247.62/94,155
  6. Step 6: Final answer
    x = 75,093.84

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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.