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Finding the Fourth Proportional to 565,314.26, 780,256.71 and 347,709.95

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Solution

The fourth proportional to 565,314.26, 780,256.71 and 347,709.95 is: 479,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,314.26 : 780,256.71 = 347,709.95 : x
  2. Step 2: Convert to fraction form
    565,314.26/780,256.71 = 347,709.95/x
  3. Step 3: Cross multiply
    565,314.26x = 780,256.71 × 347,709.95
  4. Step 4: Simplify right side
    565,314.26x = 271,303,017,719.98
  5. Step 5: Solve for x
    x = 271,303,017,719.98/565,314.26
  6. Step 6: Final answer
    x = 479,915.40

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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.