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Finding the Fourth Proportional to 58,686.83, 80,987.70 and 31,829.20

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Solution

The fourth proportional to 58,686.83, 80,987.70 and 31,829.20 is: 43,924.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,686.83 : 80,987.70 = 31,829.20 : x
  2. Step 2: Convert to fraction form
    58,686.83/80,987.70 = 31,829.20/x
  3. Step 3: Cross multiply
    58,686.83x = 80,987.70 × 31,829.20
  4. Step 4: Simplify right side
    58,686.83x = 2,577,773,894.25
  5. Step 5: Solve for x
    x = 2,577,773,894.25/58,686.83
  6. Step 6: Final answer
    x = 43,924.23

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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.