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Finding the Fourth Proportional to 354,955.53, 489,834.90 and 193,810.08

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Solution

The fourth proportional to 354,955.53, 489,834.90 and 193,810.08 is: 267,455.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,955.53 : 489,834.90 = 193,810.08 : x
  2. Step 2: Convert to fraction form
    354,955.53/489,834.90 = 193,810.08/x
  3. Step 3: Cross multiply
    354,955.53x = 489,834.90 × 193,810.08
  4. Step 4: Simplify right side
    354,955.53x = 94,934,941,155.79
  5. Step 5: Solve for x
    x = 94,934,941,155.79/354,955.53
  6. Step 6: Final answer
    x = 267,455.87

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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.