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Finding the Fourth Proportional to 172,425.75, 238,056.84 and 118,068.87

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Solution

The fourth proportional to 172,425.75, 238,056.84 and 118,068.87 is: 163,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,425.75 : 238,056.84 = 118,068.87 : x
  2. Step 2: Convert to fraction form
    172,425.75/238,056.84 = 118,068.87/x
  3. Step 3: Cross multiply
    172,425.75x = 238,056.84 × 118,068.87
  4. Step 4: Simplify right side
    172,425.75x = 28,107,102,094.57
  5. Step 5: Solve for x
    x = 28,107,102,094.57/172,425.75
  6. Step 6: Final answer
    x = 163,009.89

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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.