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Finding the Fourth Proportional to 255,902.06, 353,080.14 and 153,894.72

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Solution

The fourth proportional to 255,902.06, 353,080.14 and 153,894.72 is: 212,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,902.06 : 353,080.14 = 153,894.72 : x
  2. Step 2: Convert to fraction form
    255,902.06/353,080.14 = 153,894.72/x
  3. Step 3: Cross multiply
    255,902.06x = 353,080.14 × 153,894.72
  4. Step 4: Simplify right side
    255,902.06x = 54,337,169,282.86
  5. Step 5: Solve for x
    x = 54,337,169,282.86/255,902.06
  6. Step 6: Final answer
    x = 212,335.80

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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.