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Finding the Fourth Proportional to 114,561.90, 171,842.85 and 77,237.10

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Solution

The fourth proportional to 114,561.90, 171,842.85 and 77,237.10 is: 115,855.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,561.90 : 171,842.85 = 77,237.10 : x
  2. Step 2: Convert to fraction form
    114,561.90/171,842.85 = 77,237.10/x
  3. Step 3: Cross multiply
    114,561.90x = 171,842.85 × 77,237.10
  4. Step 4: Simplify right side
    114,561.90x = 13,272,643,389.74
  5. Step 5: Solve for x
    x = 13,272,643,389.74/114,561.90
  6. Step 6: Final answer
    x = 115,855.65

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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.