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Finding the Fourth Proportional to 92,903.25, 128,187.63 and 56,580.33

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Solution

The fourth proportional to 92,903.25, 128,187.63 and 56,580.33 is: 78,069.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,903.25 : 128,187.63 = 56,580.33 : x
  2. Step 2: Convert to fraction form
    92,903.25/128,187.63 = 56,580.33/x
  3. Step 3: Cross multiply
    92,903.25x = 128,187.63 × 56,580.33
  4. Step 4: Simplify right side
    92,903.25x = 7,252,898,407.32
  5. Step 5: Solve for x
    x = 7,252,898,407.32/92,903.25
  6. Step 6: Final answer
    x = 78,069.37

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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.