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Finding the Fourth Proportional to 64,772.84, 97,144.68 and 42,276.44

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Solution

The fourth proportional to 64,772.84, 97,144.68 and 42,276.44 is: 63,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,772.84 : 97,144.68 = 42,276.44 : x
  2. Step 2: Convert to fraction form
    64,772.84/97,144.68 = 42,276.44/x
  3. Step 3: Cross multiply
    64,772.84x = 97,144.68 × 42,276.44
  4. Step 4: Simplify right side
    64,772.84x = 4,106,931,235.34
  5. Step 5: Solve for x
    x = 4,106,931,235.34/64,772.84
  6. Step 6: Final answer
    x = 63,405.14

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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.