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Finding the Fourth Proportional to 157,090.50, 216,783.21 and 93,426.90

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Solution

The fourth proportional to 157,090.50, 216,783.21 and 93,426.90 is: 128,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,090.50 : 216,783.21 = 93,426.90 : x
  2. Step 2: Convert to fraction form
    157,090.50/216,783.21 = 93,426.90/x
  3. Step 3: Cross multiply
    157,090.50x = 216,783.21 × 93,426.90
  4. Step 4: Simplify right side
    157,090.50x = 20,253,383,282.35
  5. Step 5: Solve for x
    x = 20,253,383,282.35/157,090.50
  6. Step 6: Final answer
    x = 128,928.12

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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.