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Finding the Fourth Proportional to 1,173,762.64, 1,619,799.20 and 690,348.16

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Solution

The fourth proportional to 1,173,762.64, 1,619,799.20 and 690,348.16 is: 952,684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,762.64 : 1,619,799.20 = 690,348.16 : x
  2. Step 2: Convert to fraction form
    1,173,762.64/1,619,799.20 = 690,348.16/x
  3. Step 3: Cross multiply
    1,173,762.64x = 1,619,799.20 × 690,348.16
  4. Step 4: Simplify right side
    1,173,762.64x = 1,118,225,397,289.47
  5. Step 5: Solve for x
    x = 1,118,225,397,289.47/1,173,762.64
  6. Step 6: Final answer
    x = 952,684.43

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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.