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Finding the Fourth Proportional to 679,069.51, 937,061.07 and 392,608.06

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Solution

The fourth proportional to 679,069.51, 937,061.07 and 392,608.06 is: 541,767.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,069.51 : 937,061.07 = 392,608.06 : x
  2. Step 2: Convert to fraction form
    679,069.51/937,061.07 = 392,608.06/x
  3. Step 3: Cross multiply
    679,069.51x = 937,061.07 × 392,608.06
  4. Step 4: Simplify right side
    679,069.51x = 367,897,732,609.16
  5. Step 5: Solve for x
    x = 367,897,732,609.16/679,069.51
  6. Step 6: Final answer
    x = 541,767.41

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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.