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Finding the Fourth Proportional to 104,688.80, 144,457.43 and 70,771.08

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Solution

The fourth proportional to 104,688.80, 144,457.43 and 70,771.08 is: 97,655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,688.80 : 144,457.43 = 70,771.08 : x
  2. Step 2: Convert to fraction form
    104,688.80/144,457.43 = 70,771.08/x
  3. Step 3: Cross multiply
    104,688.80x = 144,457.43 × 70,771.08
  4. Step 4: Simplify right side
    104,688.80x = 10,223,407,981.27
  5. Step 5: Solve for x
    x = 10,223,407,981.27/104,688.80
  6. Step 6: Final answer
    x = 97,655.23

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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.