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Finding the Fourth Proportional to 77,663.64, 116,421.62 and 49,504.65

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Solution

The fourth proportional to 77,663.64, 116,421.62 and 49,504.65 is: 74,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,663.64 : 116,421.62 = 49,504.65 : x
  2. Step 2: Convert to fraction form
    77,663.64/116,421.62 = 49,504.65/x
  3. Step 3: Cross multiply
    77,663.64x = 116,421.62 × 49,504.65
  4. Step 4: Simplify right side
    77,663.64x = 5,763,411,303.01
  5. Step 5: Solve for x
    x = 5,763,411,303.01/77,663.64
  6. Step 6: Final answer
    x = 74,209.90

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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.