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Finding the Fourth Proportional to 1,278,677.93, 1,764,566.87 and 705,718.10

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Solution

The fourth proportional to 1,278,677.93, 1,764,566.87 and 705,718.10 is: 973,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,677.93 : 1,764,566.87 = 705,718.10 : x
  2. Step 2: Convert to fraction form
    1,278,677.93/1,764,566.87 = 705,718.10/x
  3. Step 3: Cross multiply
    1,278,677.93x = 1,764,566.87 × 705,718.10
  4. Step 4: Simplify right side
    1,278,677.93x = 1,245,286,779,702.17
  5. Step 5: Solve for x
    x = 1,245,286,779,702.17/1,278,677.93
  6. Step 6: Final answer
    x = 973,886.19

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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.