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Finding the Fourth Proportional to 93,987.55, 129,709.68 and 53,700.45

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Solution

The fourth proportional to 93,987.55, 129,709.68 and 53,700.45 is: 74,110.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,987.55 : 129,709.68 = 53,700.45 : x
  2. Step 2: Convert to fraction form
    93,987.55/129,709.68 = 53,700.45/x
  3. Step 3: Cross multiply
    93,987.55x = 129,709.68 × 53,700.45
  4. Step 4: Simplify right side
    93,987.55x = 6,965,468,185.36
  5. Step 5: Solve for x
    x = 6,965,468,185.36/93,987.55
  6. Step 6: Final answer
    x = 74,110.54

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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.