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Finding the Fourth Proportional to 47,246.40, 70,869.60 and 42,321.60

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Solution

The fourth proportional to 47,246.40, 70,869.60 and 42,321.60 is: 63,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,246.40 : 70,869.60 = 42,321.60 : x
  2. Step 2: Convert to fraction form
    47,246.40/70,869.60 = 42,321.60/x
  3. Step 3: Cross multiply
    47,246.40x = 70,869.60 × 42,321.60
  4. Step 4: Simplify right side
    47,246.40x = 2,999,314,863.36
  5. Step 5: Solve for x
    x = 2,999,314,863.36/47,246.40
  6. Step 6: Final answer
    x = 63,482.40

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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.