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Finding the Fourth Proportional to 993,842.32, 1,371,519 and 564,135.64

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Solution

The fourth proportional to 993,842.32, 1,371,519 and 564,135.64 is: 778,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,842.32 : 1,371,519 = 564,135.64 : x
  2. Step 2: Convert to fraction form
    993,842.32/1,371,519 = 564,135.64/x
  3. Step 3: Cross multiply
    993,842.32x = 1,371,519 × 564,135.64
  4. Step 4: Simplify right side
    993,842.32x = 773,722,748,837.16
  5. Step 5: Solve for x
    x = 773,722,748,837.16/993,842.32
  6. Step 6: Final answer
    x = 778,516.60

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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.