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Finding the Fourth Proportional to 401,185.28, 553,696.68 and 256,053.76

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Solution

The fourth proportional to 401,185.28, 553,696.68 and 256,053.76 is: 353,393.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,185.28 : 553,696.68 = 256,053.76 : x
  2. Step 2: Convert to fraction form
    401,185.28/553,696.68 = 256,053.76/x
  3. Step 3: Cross multiply
    401,185.28x = 553,696.68 × 256,053.76
  4. Step 4: Simplify right side
    401,185.28x = 141,776,116,813.52
  5. Step 5: Solve for x
    x = 141,776,116,813.52/401,185.28
  6. Step 6: Final answer
    x = 353,393.12

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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.