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Finding the Fourth Proportional to 190,870.70, 286,233.15 and 57,706.70

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Solution

The fourth proportional to 190,870.70, 286,233.15 and 57,706.70 is: 86,538.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,870.70 : 286,233.15 = 57,706.70 : x
  2. Step 2: Convert to fraction form
    190,870.70/286,233.15 = 57,706.70/x
  3. Step 3: Cross multiply
    190,870.70x = 286,233.15 × 57,706.70
  4. Step 4: Simplify right side
    190,870.70x = 16,517,570,517.11
  5. Step 5: Solve for x
    x = 16,517,570,517.11/190,870.70
  6. Step 6: Final answer
    x = 86,538.01

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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.