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Finding the Fourth Proportional to 1,249,653.78, 1,724,530.42 and 676,693.98

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Solution

The fourth proportional to 1,249,653.78, 1,724,530.42 and 676,693.98 is: 933,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,653.78 : 1,724,530.42 = 676,693.98 : x
  2. Step 2: Convert to fraction form
    1,249,653.78/1,724,530.42 = 676,693.98/x
  3. Step 3: Cross multiply
    1,249,653.78x = 1,724,530.42 × 676,693.98
  4. Step 4: Simplify right side
    1,249,653.78x = 1,166,979,353,540.87
  5. Step 5: Solve for x
    x = 1,166,979,353,540.87/1,249,653.78
  6. Step 6: Final answer
    x = 933,842.13

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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.