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Finding the Fourth Proportional to 253,678.07, 350,078.30 and 153,056.63

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Solution

The fourth proportional to 253,678.07, 350,078.30 and 153,056.63 is: 211,219.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,678.07 : 350,078.30 = 153,056.63 : x
  2. Step 2: Convert to fraction form
    253,678.07/350,078.30 = 153,056.63/x
  3. Step 3: Cross multiply
    253,678.07x = 350,078.30 × 153,056.63
  4. Step 4: Simplify right side
    253,678.07x = 53,581,803,466.38
  5. Step 5: Solve for x
    x = 53,581,803,466.38/253,678.07
  6. Step 6: Final answer
    x = 211,219.69

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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.