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Finding the Fourth Proportional to 58,549, 80,775.57 and 38,416.99

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Solution

The fourth proportional to 58,549, 80,775.57 and 38,416.99 is: 53,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,549 : 80,775.57 = 38,416.99 : x
  2. Step 2: Convert to fraction form
    58,549/80,775.57 = 38,416.99/x
  3. Step 3: Cross multiply
    58,549x = 80,775.57 × 38,416.99
  4. Step 4: Simplify right side
    58,549x = 3,103,154,264.93
  5. Step 5: Solve for x
    x = 3,103,154,264.93/58,549
  6. Step 6: Final answer
    x = 53,000.98

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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.