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Finding the Fourth Proportional to 45,651.60, 68,477.40 and 42,152.40

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Solution

The fourth proportional to 45,651.60, 68,477.40 and 42,152.40 is: 63,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,651.60 : 68,477.40 = 42,152.40 : x
  2. Step 2: Convert to fraction form
    45,651.60/68,477.40 = 42,152.40/x
  3. Step 3: Cross multiply
    45,651.60x = 68,477.40 × 42,152.40
  4. Step 4: Simplify right side
    45,651.60x = 2,886,486,755.76
  5. Step 5: Solve for x
    x = 2,886,486,755.76/45,651.60
  6. Step 6: Final answer
    x = 63,228.60

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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.