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Finding the Fourth Proportional to 292,823.80, 439,235.70 and 198,345.40

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Solution

The fourth proportional to 292,823.80, 439,235.70 and 198,345.40 is: 297,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,823.80 : 439,235.70 = 198,345.40 : x
  2. Step 2: Convert to fraction form
    292,823.80/439,235.70 = 198,345.40/x
  3. Step 3: Cross multiply
    292,823.80x = 439,235.70 × 198,345.40
  4. Step 4: Simplify right side
    292,823.80x = 87,120,380,610.78
  5. Step 5: Solve for x
    x = 87,120,380,610.78/292,823.80
  6. Step 6: Final answer
    x = 297,518.10

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1.5x scale

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.