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Finding the Fourth Proportional to 70,928.99, 97,881.99 and 39,098.55

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Solution

The fourth proportional to 70,928.99, 97,881.99 and 39,098.55 is: 53,955.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,928.99 : 97,881.99 = 39,098.55 : x
  2. Step 2: Convert to fraction form
    70,928.99/97,881.99 = 39,098.55/x
  3. Step 3: Cross multiply
    70,928.99x = 97,881.99 × 39,098.55
  4. Step 4: Simplify right side
    70,928.99x = 3,827,043,880.11
  5. Step 5: Solve for x
    x = 3,827,043,880.11/70,928.99
  6. Step 6: Final answer
    x = 53,955.99

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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.