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Finding the Fourth Proportional to 144,459.59, 216,492.55 and 69,574.28

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Solution

The fourth proportional to 144,459.59, 216,492.55 and 69,574.28 is: 104,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,459.59 : 216,492.55 = 69,574.28 : x
  2. Step 2: Convert to fraction form
    144,459.59/216,492.55 = 69,574.28/x
  3. Step 3: Cross multiply
    144,459.59x = 216,492.55 × 69,574.28
  4. Step 4: Simplify right side
    144,459.59x = 15,062,312,035.22
  5. Step 5: Solve for x
    x = 15,062,312,035.22/144,459.59
  6. Step 6: Final answer
    x = 104,266.62

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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.