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Finding the Fourth Proportional to 679,018.32, 936,693.88 and 461,238.20

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Solution

The fourth proportional to 679,018.32, 936,693.88 and 461,238.20 is: 636,270.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,018.32 : 936,693.88 = 461,238.20 : x
  2. Step 2: Convert to fraction form
    679,018.32/936,693.88 = 461,238.20/x
  3. Step 3: Cross multiply
    679,018.32x = 936,693.88 × 461,238.20
  4. Step 4: Simplify right side
    679,018.32x = 432,038,999,162.22
  5. Step 5: Solve for x
    x = 432,038,999,162.22/679,018.32
  6. Step 6: Final answer
    x = 636,270.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.