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Finding the Fourth Proportional to 93,417, 128,915.49 and 59,883

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Solution

The fourth proportional to 93,417, 128,915.49 and 59,883 is: 82,638.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,417 : 128,915.49 = 59,883 : x
  2. Step 2: Convert to fraction form
    93,417/128,915.49 = 59,883/x
  3. Step 3: Cross multiply
    93,417x = 128,915.49 × 59,883
  4. Step 4: Simplify right side
    93,417x = 7,719,846,287.67
  5. Step 5: Solve for x
    x = 7,719,846,287.67/93,417
  6. Step 6: Final answer
    x = 82,638.56

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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.