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Finding the Fourth Proportional to 45,776.94, 68,700.54 and 20,484.28

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Solution

The fourth proportional to 45,776.94, 68,700.54 and 20,484.28 is: 30,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,776.94 : 68,700.54 = 20,484.28 : x
  2. Step 2: Convert to fraction form
    45,776.94/68,700.54 = 20,484.28/x
  3. Step 3: Cross multiply
    45,776.94x = 68,700.54 × 20,484.28
  4. Step 4: Simplify right side
    45,776.94x = 1,407,281,097.51
  5. Step 5: Solve for x
    x = 1,407,281,097.51/45,776.94
  6. Step 6: Final answer
    x = 30,742.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.