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Finding the Fourth Proportional to 729,234.90, 1,018,566.90 and 729,234.90

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Solution

The fourth proportional to 729,234.90, 1,018,566.90 and 729,234.90 is: 1,018,566.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,234.90 : 1,018,566.90 = 729,234.90 : x
  2. Step 2: Convert to fraction form
    729,234.90/1,018,566.90 = 729,234.90/x
  3. Step 3: Cross multiply
    729,234.90x = 1,018,566.90 × 729,234.90
  4. Step 4: Simplify right side
    729,234.90x = 742,774,531,464.81
  5. Step 5: Solve for x
    x = 742,774,531,464.81/729,234.90
  6. Step 6: Final answer
    x = 1,018,566.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.