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Finding the Fourth Proportional to 49,658.40, 74,487.60 and 46,807.20

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Solution

The fourth proportional to 49,658.40, 74,487.60 and 46,807.20 is: 70,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,658.40 : 74,487.60 = 46,807.20 : x
  2. Step 2: Convert to fraction form
    49,658.40/74,487.60 = 46,807.20/x
  3. Step 3: Cross multiply
    49,658.40x = 74,487.60 × 46,807.20
  4. Step 4: Simplify right side
    49,658.40x = 3,486,555,990.72
  5. Step 5: Solve for x
    x = 3,486,555,990.72/49,658.40
  6. Step 6: Final answer
    x = 70,210.80

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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.