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Finding the Fourth Proportional to 354,632.60, 532,143.30 and 144,421.40

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Solution

The fourth proportional to 354,632.60, 532,143.30 and 144,421.40 is: 216,711.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,632.60 : 532,143.30 = 144,421.40 : x
  2. Step 2: Convert to fraction form
    354,632.60/532,143.30 = 144,421.40/x
  3. Step 3: Cross multiply
    354,632.60x = 532,143.30 × 144,421.40
  4. Step 4: Simplify right side
    354,632.60x = 76,852,880,386.62
  5. Step 5: Solve for x
    x = 76,852,880,386.62/354,632.60
  6. Step 6: Final answer
    x = 216,711.27

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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.