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Finding the Fourth Proportional to 190,955.25, 286,432.88 and 66,296.25

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Solution

The fourth proportional to 190,955.25, 286,432.88 and 66,296.25 is: 99,444.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,955.25 : 286,432.88 = 66,296.25 : x
  2. Step 2: Convert to fraction form
    190,955.25/286,432.88 = 66,296.25/x
  3. Step 3: Cross multiply
    190,955.25x = 286,432.88 × 66,296.25
  4. Step 4: Simplify right side
    190,955.25x = 18,989,425,489.22
  5. Step 5: Solve for x
    x = 18,989,425,489.22/190,955.25
  6. Step 6: Final answer
    x = 99,444.38

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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.