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Finding the Fourth Proportional to 256,479.53, 353,984.80 and 173,655.95

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Solution

The fourth proportional to 256,479.53, 353,984.80 and 173,655.95 is: 239,674.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,479.53 : 353,984.80 = 173,655.95 : x
  2. Step 2: Convert to fraction form
    256,479.53/353,984.80 = 173,655.95/x
  3. Step 3: Cross multiply
    256,479.53x = 353,984.80 × 173,655.95
  4. Step 4: Simplify right side
    256,479.53x = 61,471,564,851.10
  5. Step 5: Solve for x
    x = 61,471,564,851.10/256,479.53
  6. Step 6: Final answer
    x = 239,674.36

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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.