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Finding the Fourth Proportional to 49,782.40, 74,673.60 and 35,785.60

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Solution

The fourth proportional to 49,782.40, 74,673.60 and 35,785.60 is: 53,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,782.40 : 74,673.60 = 35,785.60 : x
  2. Step 2: Convert to fraction form
    49,782.40/74,673.60 = 35,785.60/x
  3. Step 3: Cross multiply
    49,782.40x = 74,673.60 × 35,785.60
  4. Step 4: Simplify right side
    49,782.40x = 2,672,239,580.16
  5. Step 5: Solve for x
    x = 2,672,239,580.16/49,782.40
  6. Step 6: Final answer
    x = 53,678.40

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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.