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Finding the Fourth Proportional to 83,368.16, 115,045.44 and 45,640.16

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Solution

The fourth proportional to 83,368.16, 115,045.44 and 45,640.16 is: 62,981.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,368.16 : 115,045.44 = 45,640.16 : x
  2. Step 2: Convert to fraction form
    83,368.16/115,045.44 = 45,640.16/x
  3. Step 3: Cross multiply
    83,368.16x = 115,045.44 × 45,640.16
  4. Step 4: Simplify right side
    83,368.16x = 5,250,692,288.87
  5. Step 5: Solve for x
    x = 5,250,692,288.87/83,368.16
  6. Step 6: Final answer
    x = 62,981.99

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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.