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Finding the Fourth Proportional to 45,316.16, 68,026.08 and 42,724.16

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Solution

The fourth proportional to 45,316.16, 68,026.08 and 42,724.16 is: 64,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,316.16 : 68,026.08 = 42,724.16 : x
  2. Step 2: Convert to fraction form
    45,316.16/68,026.08 = 42,724.16/x
  3. Step 3: Cross multiply
    45,316.16x = 68,026.08 × 42,724.16
  4. Step 4: Simplify right side
    45,316.16x = 2,906,357,126.09
  5. Step 5: Solve for x
    x = 2,906,357,126.09/45,316.16
  6. Step 6: Final answer
    x = 64,135.11

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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.