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Finding the Fourth Proportional to 58,572.55, 80,830.16 and 31,715.08

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Solution

The fourth proportional to 58,572.55, 80,830.16 and 31,715.08 is: 43,766.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,572.55 : 80,830.16 = 31,715.08 : x
  2. Step 2: Convert to fraction form
    58,572.55/80,830.16 = 31,715.08/x
  3. Step 3: Cross multiply
    58,572.55x = 80,830.16 × 31,715.08
  4. Step 4: Simplify right side
    58,572.55x = 2,563,534,990.81
  5. Step 5: Solve for x
    x = 2,563,534,990.81/58,572.55
  6. Step 6: Final answer
    x = 43,766.83

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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.