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Finding the Fourth Proportional to 103,618.80, 155,428.20 and 44,444.40

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Solution

The fourth proportional to 103,618.80, 155,428.20 and 44,444.40 is: 66,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.80 : 155,428.20 = 44,444.40 : x
  2. Step 2: Convert to fraction form
    103,618.80/155,428.20 = 44,444.40/x
  3. Step 3: Cross multiply
    103,618.80x = 155,428.20 × 44,444.40
  4. Step 4: Simplify right side
    103,618.80x = 6,907,913,092.08
  5. Step 5: Solve for x
    x = 6,907,913,092.08/103,618.80
  6. Step 6: Final answer
    x = 66,666.60

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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.