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Finding the Fourth Proportional to 70,915.36, 97,858.80 and 39,082.48

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Solution

The fourth proportional to 70,915.36, 97,858.80 and 39,082.48 is: 53,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915.36 : 97,858.80 = 39,082.48 : x
  2. Step 2: Convert to fraction form
    70,915.36/97,858.80 = 39,082.48/x
  3. Step 3: Cross multiply
    70,915.36x = 97,858.80 × 39,082.48
  4. Step 4: Simplify right side
    70,915.36x = 3,824,564,593.82
  5. Step 5: Solve for x
    x = 3,824,564,593.82/70,915.36
  6. Step 6: Final answer
    x = 53,931.40

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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.