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Finding the Fourth Proportional to 1,187,570, 1,638,846.60 and 651,026

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Solution

The fourth proportional to 1,187,570, 1,638,846.60 and 651,026 is: 898,415.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,570 : 1,638,846.60 = 651,026 : x
  2. Step 2: Convert to fraction form
    1,187,570/1,638,846.60 = 651,026/x
  3. Step 3: Cross multiply
    1,187,570x = 1,638,846.60 × 651,026
  4. Step 4: Simplify right side
    1,187,570x = 1,066,931,746,611.60
  5. Step 5: Solve for x
    x = 1,066,931,746,611.60/1,187,570
  6. Step 6: Final answer
    x = 898,415.88

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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.