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Finding the Fourth Proportional to 8,935.03, 12,328.50 and 5,158.14

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Solution

The fourth proportional to 8,935.03, 12,328.50 and 5,158.14 is: 7,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.03 : 12,328.50 = 5,158.14 : x
  2. Step 2: Convert to fraction form
    8,935.03/12,328.50 = 5,158.14/x
  3. Step 3: Cross multiply
    8,935.03x = 12,328.50 × 5,158.14
  4. Step 4: Simplify right side
    8,935.03x = 63,592,128.99
  5. Step 5: Solve for x
    x = 63,592,128.99/8,935.03
  6. Step 6: Final answer
    x = 7,117.17

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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.