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Finding the Fourth Proportional to 29,492.80, 40,700.64 and 16,918.08

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Solution

The fourth proportional to 29,492.80, 40,700.64 and 16,918.08 is: 23,347.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,492.80 : 40,700.64 = 16,918.08 : x
  2. Step 2: Convert to fraction form
    29,492.80/40,700.64 = 16,918.08/x
  3. Step 3: Cross multiply
    29,492.80x = 40,700.64 × 16,918.08
  4. Step 4: Simplify right side
    29,492.80x = 688,576,683.57
  5. Step 5: Solve for x
    x = 688,576,683.57/29,492.80
  6. Step 6: Final answer
    x = 23,347.28

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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.