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Finding the Fourth Proportional to 8,924.70, 12,312.54 and 5,737.45

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Solution

The fourth proportional to 8,924.70, 12,312.54 and 5,737.45 is: 7,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,924.70 : 12,312.54 = 5,737.45 : x
  2. Step 2: Convert to fraction form
    8,924.70/12,312.54 = 5,737.45/x
  3. Step 3: Cross multiply
    8,924.70x = 12,312.54 × 5,737.45
  4. Step 4: Simplify right side
    8,924.70x = 70,642,582.62
  5. Step 5: Solve for x
    x = 70,642,582.62/8,924.70
  6. Step 6: Final answer
    x = 7,915.40

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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.