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Finding the Fourth Proportional to 7,915.50, 10,925.82 and 4,774.32

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Solution

The fourth proportional to 7,915.50, 10,925.82 and 4,774.32 is: 6,590.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.50 : 10,925.82 = 4,774.32 : x
  2. Step 2: Convert to fraction form
    7,915.50/10,925.82 = 4,774.32/x
  3. Step 3: Cross multiply
    7,915.50x = 10,925.82 × 4,774.32
  4. Step 4: Simplify right side
    7,915.50x = 52,163,360.94
  5. Step 5: Solve for x
    x = 52,163,360.94/7,915.50
  6. Step 6: Final answer
    x = 6,590.03

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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.