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Finding the Fourth Proportional to 1,260,807.16, 1,739,905.62 and 716,943.04

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Solution

The fourth proportional to 1,260,807.16, 1,739,905.62 and 716,943.04 is: 989,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,807.16 : 1,739,905.62 = 716,943.04 : x
  2. Step 2: Convert to fraction form
    1,260,807.16/1,739,905.62 = 716,943.04/x
  3. Step 3: Cross multiply
    1,260,807.16x = 1,739,905.62 × 716,943.04
  4. Step 4: Simplify right side
    1,260,807.16x = 1,247,413,224,515.89
  5. Step 5: Solve for x
    x = 1,247,413,224,515.89/1,260,807.16
  6. Step 6: Final answer
    x = 989,376.70

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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.