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Finding the Fourth Proportional to 144,307.92, 215,405.12 and 127,264.02

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Solution

The fourth proportional to 144,307.92, 215,405.12 and 127,264.02 is: 189,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,307.92 : 215,405.12 = 127,264.02 : x
  2. Step 2: Convert to fraction form
    144,307.92/215,405.12 = 127,264.02/x
  3. Step 3: Cross multiply
    144,307.92x = 215,405.12 × 127,264.02
  4. Step 4: Simplify right side
    144,307.92x = 27,413,321,817.94
  5. Step 5: Solve for x
    x = 27,413,321,817.94/144,307.92
  6. Step 6: Final answer
    x = 189,964.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.