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Finding the Fourth Proportional to 28,290.16, 39,041.05 and 16,354.00

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Solution

The fourth proportional to 28,290.16, 39,041.05 and 16,354.00 is: 22,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.16 : 39,041.05 = 16,354.00 : x
  2. Step 2: Convert to fraction form
    28,290.16/39,041.05 = 16,354.00/x
  3. Step 3: Cross multiply
    28,290.16x = 39,041.05 × 16,354.00
  4. Step 4: Simplify right side
    28,290.16x = 638,477,193.21
  5. Step 5: Solve for x
    x = 638,477,193.21/28,290.16
  6. Step 6: Final answer
    x = 22,568.88

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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.