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Finding the Fourth Proportional to 679,129.60, 936,012.54 and 497,455.42

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Solution

The fourth proportional to 679,129.60, 936,012.54 and 497,455.42 is: 685,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,129.60 : 936,012.54 = 497,455.42 : x
  2. Step 2: Convert to fraction form
    679,129.60/936,012.54 = 497,455.42/x
  3. Step 3: Cross multiply
    679,129.60x = 936,012.54 × 497,455.42
  4. Step 4: Simplify right side
    679,129.60x = 465,624,511,210.97
  5. Step 5: Solve for x
    x = 465,624,511,210.97/679,129.60
  6. Step 6: Final answer
    x = 685,619.52

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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.