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Finding the Fourth Proportional to 112,683.70, 155,503.50 and 62,382.70

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Solution

The fourth proportional to 112,683.70, 155,503.50 and 62,382.70 is: 86,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,683.70 : 155,503.50 = 62,382.70 : x
  2. Step 2: Convert to fraction form
    112,683.70/155,503.50 = 62,382.70/x
  3. Step 3: Cross multiply
    112,683.70x = 155,503.50 × 62,382.70
  4. Step 4: Simplify right side
    112,683.70x = 9,700,728,189.45
  5. Step 5: Solve for x
    x = 9,700,728,189.45/112,683.70
  6. Step 6: Final answer
    x = 86,088.12

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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.