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Finding the Fourth Proportional to 103,707.50, 155,561.25 and 29,835.50

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Solution

The fourth proportional to 103,707.50, 155,561.25 and 29,835.50 is: 44,753.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,707.50 : 155,561.25 = 29,835.50 : x
  2. Step 2: Convert to fraction form
    103,707.50/155,561.25 = 29,835.50/x
  3. Step 3: Cross multiply
    103,707.50x = 155,561.25 × 29,835.50
  4. Step 4: Simplify right side
    103,707.50x = 4,641,247,674.38
  5. Step 5: Solve for x
    x = 4,641,247,674.38/103,707.50
  6. Step 6: Final answer
    x = 44,753.25

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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.