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Finding the Fourth Proportional to 176,690.40, 243,752.28 and 105,029.68

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Solution

The fourth proportional to 176,690.40, 243,752.28 and 105,029.68 is: 144,893.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,690.40 : 243,752.28 = 105,029.68 : x
  2. Step 2: Convert to fraction form
    176,690.40/243,752.28 = 105,029.68/x
  3. Step 3: Cross multiply
    176,690.40x = 243,752.28 × 105,029.68
  4. Step 4: Simplify right side
    176,690.40x = 25,601,223,967.67
  5. Step 5: Solve for x
    x = 25,601,223,967.67/176,690.40
  6. Step 6: Final answer
    x = 144,893.12

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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.