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Finding the Fourth Proportional to 103,616.40, 155,347.80 and 44,403.60

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Solution

The fourth proportional to 103,616.40, 155,347.80 and 44,403.60 is: 66,572.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.40 : 155,347.80 = 44,403.60 : x
  2. Step 2: Convert to fraction form
    103,616.40/155,347.80 = 44,403.60/x
  3. Step 3: Cross multiply
    103,616.40x = 155,347.80 × 44,403.60
  4. Step 4: Simplify right side
    103,616.40x = 6,898,001,572.08
  5. Step 5: Solve for x
    x = 6,898,001,572.08/103,616.40
  6. Step 6: Final answer
    x = 66,572.49

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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.