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Finding the Fourth Proportional to 93,915.12, 129,606 and 51,473.76

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Solution

The fourth proportional to 93,915.12, 129,606 and 51,473.76 is: 71,035.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,915.12 : 129,606 = 51,473.76 : x
  2. Step 2: Convert to fraction form
    93,915.12/129,606 = 51,473.76/x
  3. Step 3: Cross multiply
    93,915.12x = 129,606 × 51,473.76
  4. Step 4: Simplify right side
    93,915.12x = 6,671,308,138.56
  5. Step 5: Solve for x
    x = 6,671,308,138.56/93,915.12
  6. Step 6: Final answer
    x = 71,035.51

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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.