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Finding the Fourth Proportional to 641,803.32, 963,000 and 242,582.76

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Solution

The fourth proportional to 641,803.32, 963,000 and 242,582.76 is: 363,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,803.32 : 963,000 = 242,582.76 : x
  2. Step 2: Convert to fraction form
    641,803.32/963,000 = 242,582.76/x
  3. Step 3: Cross multiply
    641,803.32x = 963,000 × 242,582.76
  4. Step 4: Simplify right side
    641,803.32x = 233,607,197,880
  5. Step 5: Solve for x
    x = 233,607,197,880/641,803.32
  6. Step 6: Final answer
    x = 363,985.65

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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.