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Finding the Fourth Proportional to 161,881.92, 242,931.96 and 56,701.80

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Solution

The fourth proportional to 161,881.92, 242,931.96 and 56,701.80 is: 85,090.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,881.92 : 242,931.96 = 56,701.80 : x
  2. Step 2: Convert to fraction form
    161,881.92/242,931.96 = 56,701.80/x
  3. Step 3: Cross multiply
    161,881.92x = 242,931.96 × 56,701.80
  4. Step 4: Simplify right side
    161,881.92x = 13,774,679,409.53
  5. Step 5: Solve for x
    x = 13,774,679,409.53/161,881.92
  6. Step 6: Final answer
    x = 85,090.91

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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.