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Finding the Fourth Proportional to 92,790.80, 128,051.68 and 50,349.32

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Solution

The fourth proportional to 92,790.80, 128,051.68 and 50,349.32 is: 69,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,790.80 : 128,051.68 = 50,349.32 : x
  2. Step 2: Convert to fraction form
    92,790.80/128,051.68 = 50,349.32/x
  3. Step 3: Cross multiply
    92,790.80x = 128,051.68 × 50,349.32
  4. Step 4: Simplify right side
    92,790.80x = 6,447,315,012.86
  5. Step 5: Solve for x
    x = 6,447,315,012.86/92,790.80
  6. Step 6: Final answer
    x = 69,482.27

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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.