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Finding the Fourth Proportional to 58,299.79, 80,259.15 and 55,621.72

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Solution

The fourth proportional to 58,299.79, 80,259.15 and 55,621.72 is: 76,572.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,299.79 : 80,259.15 = 55,621.72 : x
  2. Step 2: Convert to fraction form
    58,299.79/80,259.15 = 55,621.72/x
  3. Step 3: Cross multiply
    58,299.79x = 80,259.15 × 55,621.72
  4. Step 4: Simplify right side
    58,299.79x = 4,464,151,968.74
  5. Step 5: Solve for x
    x = 4,464,151,968.74/58,299.79
  6. Step 6: Final answer
    x = 76,572.35

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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.