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Finding the Fourth Proportional to 291,937.80, 437,906.70 and 186,875.40

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Solution

The fourth proportional to 291,937.80, 437,906.70 and 186,875.40 is: 280,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,937.80 : 437,906.70 = 186,875.40 : x
  2. Step 2: Convert to fraction form
    291,937.80/437,906.70 = 186,875.40/x
  3. Step 3: Cross multiply
    291,937.80x = 437,906.70 × 186,875.40
  4. Step 4: Simplify right side
    291,937.80x = 81,833,989,725.18
  5. Step 5: Solve for x
    x = 81,833,989,725.18/291,937.80
  6. Step 6: Final answer
    x = 280,313.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.