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Finding the Fourth Proportional to 612,751.86, 845,570.30 and 354,587.44

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Solution

The fourth proportional to 612,751.86, 845,570.30 and 354,587.44 is: 489,314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,751.86 : 845,570.30 = 354,587.44 : x
  2. Step 2: Convert to fraction form
    612,751.86/845,570.30 = 354,587.44/x
  3. Step 3: Cross multiply
    612,751.86x = 845,570.30 × 354,587.44
  4. Step 4: Simplify right side
    612,751.86x = 299,828,609,687.72
  5. Step 5: Solve for x
    x = 299,828,609,687.72/612,751.86
  6. Step 6: Final answer
    x = 489,314.89

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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.