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Finding the Fourth Proportional to 616,897.20, 925,345.80 and 196,215.60

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Solution

The fourth proportional to 616,897.20, 925,345.80 and 196,215.60 is: 294,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,897.20 : 925,345.80 = 196,215.60 : x
  2. Step 2: Convert to fraction form
    616,897.20/925,345.80 = 196,215.60/x
  3. Step 3: Cross multiply
    616,897.20x = 925,345.80 × 196,215.60
  4. Step 4: Simplify right side
    616,897.20x = 181,567,281,354.48
  5. Step 5: Solve for x
    x = 181,567,281,354.48/616,897.20
  6. Step 6: Final answer
    x = 294,323.40

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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.