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Finding the Fourth Proportional to 65,108.40, 89,849.16 and 36,814.20

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Solution

The fourth proportional to 65,108.40, 89,849.16 and 36,814.20 is: 50,803.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,108.40 : 89,849.16 = 36,814.20 : x
  2. Step 2: Convert to fraction form
    65,108.40/89,849.16 = 36,814.20/x
  3. Step 3: Cross multiply
    65,108.40x = 89,849.16 × 36,814.20
  4. Step 4: Simplify right side
    65,108.40x = 3,307,724,946.07
  5. Step 5: Solve for x
    x = 3,307,724,946.07/65,108.40
  6. Step 6: Final answer
    x = 50,803.35

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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.