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Finding the Fourth Proportional to 1,260,824.76, 1,739,929.92 and 716,960.58

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Solution

The fourth proportional to 1,260,824.76, 1,739,929.92 and 716,960.58 is: 989,400.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,824.76 : 1,739,929.92 = 716,960.58 : x
  2. Step 2: Convert to fraction form
    1,260,824.76/1,739,929.92 = 716,960.58/x
  3. Step 3: Cross multiply
    1,260,824.76x = 1,739,929.92 × 716,960.58
  4. Step 4: Simplify right side
    1,260,824.76x = 1,247,461,164,602.55
  5. Step 5: Solve for x
    x = 1,247,461,164,602.55/1,260,824.76
  6. Step 6: Final answer
    x = 989,400.91

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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.