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Finding the Fourth Proportional to 161,657.72, 242,487.06 and 56,476.70

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Solution

The fourth proportional to 161,657.72, 242,487.06 and 56,476.70 is: 84,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,657.72 : 242,487.06 = 56,476.70 : x
  2. Step 2: Convert to fraction form
    161,657.72/242,487.06 = 56,476.70/x
  3. Step 3: Cross multiply
    161,657.72x = 242,487.06 × 56,476.70
  4. Step 4: Simplify right side
    161,657.72x = 13,694,868,941.50
  5. Step 5: Solve for x
    x = 13,694,868,941.50/161,657.72
  6. Step 6: Final answer
    x = 84,715.22

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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.