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Finding the Fourth Proportional to 679,130.60, 936,013.92 and 497,456.42

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Solution

The fourth proportional to 679,130.60, 936,013.92 and 497,456.42 is: 685,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,130.60 : 936,013.92 = 497,456.42 : x
  2. Step 2: Convert to fraction form
    679,130.60/936,013.92 = 497,456.42/x
  3. Step 3: Cross multiply
    679,130.60x = 936,013.92 × 497,456.42
  4. Step 4: Simplify right side
    679,130.60x = 465,626,133,713.37
  5. Step 5: Solve for x
    x = 465,626,133,713.37/679,130.60
  6. Step 6: Final answer
    x = 685,620.90

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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.