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Finding the Fourth Proportional to 607,218.30, 910,827.45 and 213,234.30

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Solution

The fourth proportional to 607,218.30, 910,827.45 and 213,234.30 is: 319,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,218.30 : 910,827.45 = 213,234.30 : x
  2. Step 2: Convert to fraction form
    607,218.30/910,827.45 = 213,234.30/x
  3. Step 3: Cross multiply
    607,218.30x = 910,827.45 × 213,234.30
  4. Step 4: Simplify right side
    607,218.30x = 194,219,653,721.54
  5. Step 5: Solve for x
    x = 194,219,653,721.54/607,218.30
  6. Step 6: Final answer
    x = 319,851.45

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Half scale
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Double scale
Find fourth proportional to 607,219.30, 910,828.95 and 213,235.30
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.