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Finding the Fourth Proportional to 353,000.09, 487,140.21 and 191,855.18

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Solution

The fourth proportional to 353,000.09, 487,140.21 and 191,855.18 is: 264,760.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,000.09 : 487,140.21 = 191,855.18 : x
  2. Step 2: Convert to fraction form
    353,000.09/487,140.21 = 191,855.18/x
  3. Step 3: Cross multiply
    353,000.09x = 487,140.21 × 191,855.18
  4. Step 4: Simplify right side
    353,000.09x = 93,460,373,892.64
  5. Step 5: Solve for x
    x = 93,460,373,892.64/353,000.09
  6. Step 6: Final answer
    x = 264,760.20

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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.