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Finding the Fourth Proportional to 64,848.40, 97,056.60 and 47,028.40

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Solution

The fourth proportional to 64,848.40, 97,056.60 and 47,028.40 is: 70,385.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,848.40 : 97,056.60 = 47,028.40 : x
  2. Step 2: Convert to fraction form
    64,848.40/97,056.60 = 47,028.40/x
  3. Step 3: Cross multiply
    64,848.40x = 97,056.60 × 47,028.40
  4. Step 4: Simplify right side
    64,848.40x = 4,564,416,607.44
  5. Step 5: Solve for x
    x = 4,564,416,607.44/64,848.40
  6. Step 6: Final answer
    x = 70,385.96

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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.