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Finding the Fourth Proportional to 70,531.97, 105,798.56 and 17,941.50

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Solution

The fourth proportional to 70,531.97, 105,798.56 and 17,941.50 is: 26,912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,531.97 : 105,798.56 = 17,941.50 : x
  2. Step 2: Convert to fraction form
    70,531.97/105,798.56 = 17,941.50/x
  3. Step 3: Cross multiply
    70,531.97x = 105,798.56 × 17,941.50
  4. Step 4: Simplify right side
    70,531.97x = 1,898,184,774.53
  5. Step 5: Solve for x
    x = 1,898,184,774.53/70,531.97
  6. Step 6: Final answer
    x = 26,912.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.