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Finding the Fourth Proportional to 460,915.48, 691,373.22 and 145,396.90

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Solution

The fourth proportional to 460,915.48, 691,373.22 and 145,396.90 is: 218,095.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,915.48 : 691,373.22 = 145,396.90 : x
  2. Step 2: Convert to fraction form
    460,915.48/691,373.22 = 145,396.90/x
  3. Step 3: Cross multiply
    460,915.48x = 691,373.22 × 145,396.90
  4. Step 4: Simplify right side
    460,915.48x = 100,523,522,931.02
  5. Step 5: Solve for x
    x = 100,523,522,931.02/460,915.48
  6. Step 6: Final answer
    x = 218,095.35

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Double scale
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Similar ratio
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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.