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Finding the Fourth Proportional to 1,249,590.80, 1,724,398.44 and 705,748.88

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Solution

The fourth proportional to 1,249,590.80, 1,724,398.44 and 705,748.88 is: 973,912.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,590.80 : 1,724,398.44 = 705,748.88 : x
  2. Step 2: Convert to fraction form
    1,249,590.80/1,724,398.44 = 705,748.88/x
  3. Step 3: Cross multiply
    1,249,590.80x = 1,724,398.44 × 705,748.88
  4. Step 4: Simplify right side
    1,249,590.80x = 1,216,992,267,703.75
  5. Step 5: Solve for x
    x = 1,216,992,267,703.75/1,249,590.80
  6. Step 6: Final answer
    x = 973,912.63

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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.