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Finding the Fourth Proportional to 256,400.32, 353,836.18 and 141,681.60

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Solution

The fourth proportional to 256,400.32, 353,836.18 and 141,681.60 is: 195,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,400.32 : 353,836.18 = 141,681.60 : x
  2. Step 2: Convert to fraction form
    256,400.32/353,836.18 = 141,681.60/x
  3. Step 3: Cross multiply
    256,400.32x = 353,836.18 × 141,681.60
  4. Step 4: Simplify right side
    256,400.32x = 50,132,076,120.29
  5. Step 5: Solve for x
    x = 50,132,076,120.29/256,400.32
  6. Step 6: Final answer
    x = 195,522.67

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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.