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Finding the Fourth Proportional to 993,358.16, 1,370,681.80 and 557,798

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Solution

The fourth proportional to 993,358.16, 1,370,681.80 and 557,798 is: 769,675.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,358.16 : 1,370,681.80 = 557,798 : x
  2. Step 2: Convert to fraction form
    993,358.16/1,370,681.80 = 557,798/x
  3. Step 3: Cross multiply
    993,358.16x = 1,370,681.80 × 557,798
  4. Step 4: Simplify right side
    993,358.16x = 764,563,566,676.40
  5. Step 5: Solve for x
    x = 764,563,566,676.40/993,358.16
  6. Step 6: Final answer
    x = 769,675.63

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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.