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Finding the Fourth Proportional to 82,041.60, 113,212.80 and 48,518.40

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Solution

The fourth proportional to 82,041.60, 113,212.80 and 48,518.40 is: 66,952.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,041.60 : 113,212.80 = 48,518.40 : x
  2. Step 2: Convert to fraction form
    82,041.60/113,212.80 = 48,518.40/x
  3. Step 3: Cross multiply
    82,041.60x = 113,212.80 × 48,518.40
  4. Step 4: Simplify right side
    82,041.60x = 5,492,903,915.52
  5. Step 5: Solve for x
    x = 5,492,903,915.52/82,041.60
  6. Step 6: Final answer
    x = 66,952.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.