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Finding the Fourth Proportional to 290,758.16, 436,137.08 and 77,526.16

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Solution

The fourth proportional to 290,758.16, 436,137.08 and 77,526.16 is: 116,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,758.16 : 436,137.08 = 77,526.16 : x
  2. Step 2: Convert to fraction form
    290,758.16/436,137.08 = 77,526.16/x
  3. Step 3: Cross multiply
    290,758.16x = 436,137.08 × 77,526.16
  4. Step 4: Simplify right side
    290,758.16x = 33,812,033,046.01
  5. Step 5: Solve for x
    x = 33,812,033,046.01/290,758.16
  6. Step 6: Final answer
    x = 116,289.20

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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.