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Finding the Fourth Proportional to 91,827.60, 137,478.60 and 56,529.60

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Solution

The fourth proportional to 91,827.60, 137,478.60 and 56,529.60 is: 84,632.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,827.60 : 137,478.60 = 56,529.60 : x
  2. Step 2: Convert to fraction form
    91,827.60/137,478.60 = 56,529.60/x
  3. Step 3: Cross multiply
    91,827.60x = 137,478.60 × 56,529.60
  4. Step 4: Simplify right side
    91,827.60x = 7,771,610,266.56
  5. Step 5: Solve for x
    x = 7,771,610,266.56/91,827.60
  6. Step 6: Final answer
    x = 84,632.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.