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Finding the Fourth Proportional to 679,070.51, 937,062.45 and 392,609.06

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Solution

The fourth proportional to 679,070.51, 937,062.45 and 392,609.06 is: 541,768.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,070.51 : 937,062.45 = 392,609.06 : x
  2. Step 2: Convert to fraction form
    679,070.51/937,062.45 = 392,609.06/x
  3. Step 3: Cross multiply
    679,070.51x = 937,062.45 × 392,609.06
  4. Step 4: Simplify right side
    679,070.51x = 367,899,207,655.80
  5. Step 5: Solve for x
    x = 367,899,207,655.80/679,070.51
  6. Step 6: Final answer
    x = 541,768.79

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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.