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Finding the Fourth Proportional to 92,893, 128,216.19 and 56,619.04

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Solution

The fourth proportional to 92,893, 128,216.19 and 56,619.04 is: 78,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,893 : 128,216.19 = 56,619.04 : x
  2. Step 2: Convert to fraction form
    92,893/128,216.19 = 56,619.04/x
  3. Step 3: Cross multiply
    92,893x = 128,216.19 × 56,619.04
  4. Step 4: Simplify right side
    92,893x = 7,259,477,590.26
  5. Step 5: Solve for x
    x = 7,259,477,590.26/92,893
  6. Step 6: Final answer
    x = 78,148.81

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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.