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Finding the Fourth Proportional to 92,782.32, 128,039.58 and 52,495.26

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Solution

The fourth proportional to 92,782.32, 128,039.58 and 52,495.26 is: 72,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,782.32 : 128,039.58 = 52,495.26 : x
  2. Step 2: Convert to fraction form
    92,782.32/128,039.58 = 52,495.26/x
  3. Step 3: Cross multiply
    92,782.32x = 128,039.58 × 52,495.26
  4. Step 4: Simplify right side
    92,782.32x = 6,721,471,042.39
  5. Step 5: Solve for x
    x = 6,721,471,042.39/92,782.32
  6. Step 6: Final answer
    x = 72,443.45

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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.