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Finding the Fourth Proportional to 176,291.51, 243,257.78 and 103,697.69

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Solution

The fourth proportional to 176,291.51, 243,257.78 and 103,697.69 is: 143,088.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,291.51 : 243,257.78 = 103,697.69 : x
  2. Step 2: Convert to fraction form
    176,291.51/243,257.78 = 103,697.69/x
  3. Step 3: Cross multiply
    176,291.51x = 243,257.78 × 103,697.69
  4. Step 4: Simplify right side
    176,291.51x = 25,225,268,903.48
  5. Step 5: Solve for x
    x = 25,225,268,903.48/176,291.51
  6. Step 6: Final answer
    x = 143,088.40

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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.