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Finding the Fourth Proportional to 78,201.64, 107,915.58 and 46,351.64

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Solution

The fourth proportional to 78,201.64, 107,915.58 and 46,351.64 is: 63,963.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,201.64 : 107,915.58 = 46,351.64 : x
  2. Step 2: Convert to fraction form
    78,201.64/107,915.58 = 46,351.64/x
  3. Step 3: Cross multiply
    78,201.64x = 107,915.58 × 46,351.64
  4. Step 4: Simplify right side
    78,201.64x = 5,002,064,114.55
  5. Step 5: Solve for x
    x = 5,002,064,114.55/78,201.64
  6. Step 6: Final answer
    x = 63,963.67

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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.