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Finding the Fourth Proportional to 256,969.17, 354,618.27 and 139,096.08

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Solution

The fourth proportional to 256,969.17, 354,618.27 and 139,096.08 is: 191,953.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,969.17 : 354,618.27 = 139,096.08 : x
  2. Step 2: Convert to fraction form
    256,969.17/354,618.27 = 139,096.08/x
  3. Step 3: Cross multiply
    256,969.17x = 354,618.27 × 139,096.08
  4. Step 4: Simplify right side
    256,969.17x = 49,326,011,253.38
  5. Step 5: Solve for x
    x = 49,326,011,253.38/256,969.17
  6. Step 6: Final answer
    x = 191,953.03

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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.