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Finding the Fourth Proportional to 28,482.63, 42,724.55 and 9,762.58

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Solution

The fourth proportional to 28,482.63, 42,724.55 and 9,762.58 is: 14,644.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.63 : 42,724.55 = 9,762.58 : x
  2. Step 2: Convert to fraction form
    28,482.63/42,724.55 = 9,762.58/x
  3. Step 3: Cross multiply
    28,482.63x = 42,724.55 × 9,762.58
  4. Step 4: Simplify right side
    28,482.63x = 417,101,837.34
  5. Step 5: Solve for x
    x = 417,101,837.34/28,482.63
  6. Step 6: Final answer
    x = 14,644.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.