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Finding the Fourth Proportional to 64,912.60, 97,361.70 and 53,205.40

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Solution

The fourth proportional to 64,912.60, 97,361.70 and 53,205.40 is: 79,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,912.60 : 97,361.70 = 53,205.40 : x
  2. Step 2: Convert to fraction form
    64,912.60/97,361.70 = 53,205.40/x
  3. Step 3: Cross multiply
    64,912.60x = 97,361.70 × 53,205.40
  4. Step 4: Simplify right side
    64,912.60x = 5,180,168,193.18
  5. Step 5: Solve for x
    x = 5,180,168,193.18/64,912.60
  6. Step 6: Final answer
    x = 79,802.20

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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.