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Finding the Fourth Proportional to 93,468.08, 128,987.70 and 51,028.22

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Solution

The fourth proportional to 93,468.08, 128,987.70 and 51,028.22 is: 70,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,468.08 : 128,987.70 = 51,028.22 : x
  2. Step 2: Convert to fraction form
    93,468.08/128,987.70 = 51,028.22/x
  3. Step 3: Cross multiply
    93,468.08x = 128,987.70 × 51,028.22
  4. Step 4: Simplify right side
    93,468.08x = 6,582,012,732.89
  5. Step 5: Solve for x
    x = 6,582,012,732.89/93,468.08
  6. Step 6: Final answer
    x = 70,419.90

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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.