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Finding the Fourth Proportional to 572,999.12, 859,498.68 and 217,931.12

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Solution

The fourth proportional to 572,999.12, 859,498.68 and 217,931.12 is: 326,896.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,999.12 : 859,498.68 = 217,931.12 : x
  2. Step 2: Convert to fraction form
    572,999.12/859,498.68 = 217,931.12/x
  3. Step 3: Cross multiply
    572,999.12x = 859,498.68 × 217,931.12
  4. Step 4: Simplify right side
    572,999.12x = 187,311,509,970.92
  5. Step 5: Solve for x
    x = 187,311,509,970.92/572,999.12
  6. Step 6: Final answer
    x = 326,896.68

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Similar ratio
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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.