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Finding the Fourth Proportional to 256,530.68, 354,012.18 and 143,353.16

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Solution

The fourth proportional to 256,530.68, 354,012.18 and 143,353.16 is: 197,827.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,530.68 : 354,012.18 = 143,353.16 : x
  2. Step 2: Convert to fraction form
    256,530.68/354,012.18 = 143,353.16/x
  3. Step 3: Cross multiply
    256,530.68x = 354,012.18 × 143,353.16
  4. Step 4: Simplify right side
    256,530.68x = 50,748,764,681.49
  5. Step 5: Solve for x
    x = 50,748,764,681.49/256,530.68
  6. Step 6: Final answer
    x = 197,827.27

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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.