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Finding the Fourth Proportional to 70,805.22, 97,711.11 and 38,976.16

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Solution

The fourth proportional to 70,805.22, 97,711.11 and 38,976.16 is: 53,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,805.22 : 97,711.11 = 38,976.16 : x
  2. Step 2: Convert to fraction form
    70,805.22/97,711.11 = 38,976.16/x
  3. Step 3: Cross multiply
    70,805.22x = 97,711.11 × 38,976.16
  4. Step 4: Simplify right side
    70,805.22x = 3,808,403,612.86
  5. Step 5: Solve for x
    x = 3,808,403,612.86/70,805.22
  6. Step 6: Final answer
    x = 53,787.05

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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.