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Finding the Fourth Proportional to 48,295.70, 72,443.55 and 45,703.70

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Solution

The fourth proportional to 48,295.70, 72,443.55 and 45,703.70 is: 68,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,295.70 : 72,443.55 = 45,703.70 : x
  2. Step 2: Convert to fraction form
    48,295.70/72,443.55 = 45,703.70/x
  3. Step 3: Cross multiply
    48,295.70x = 72,443.55 × 45,703.70
  4. Step 4: Simplify right side
    48,295.70x = 3,310,938,276.14
  5. Step 5: Solve for x
    x = 3,310,938,276.14/48,295.70
  6. Step 6: Final answer
    x = 68,555.55

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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.