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Finding the Fourth Proportional to 223,671.06, 308,674.60 and 128,196.23

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Solution

The fourth proportional to 223,671.06, 308,674.60 and 128,196.23 is: 176,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,671.06 : 308,674.60 = 128,196.23 : x
  2. Step 2: Convert to fraction form
    223,671.06/308,674.60 = 128,196.23/x
  3. Step 3: Cross multiply
    223,671.06x = 308,674.60 × 128,196.23
  4. Step 4: Simplify right side
    223,671.06x = 39,570,918,152.89
  5. Step 5: Solve for x
    x = 39,570,918,152.89/223,671.06
  6. Step 6: Final answer
    x = 176,915.68

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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.