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Finding the Fourth Proportional to 1,249,861.86, 1,724,810.76 and 676,902.69

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Solution

The fourth proportional to 1,249,861.86, 1,724,810.76 and 676,902.69 is: 934,126.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,861.86 : 1,724,810.76 = 676,902.69 : x
  2. Step 2: Convert to fraction form
    1,249,861.86/1,724,810.76 = 676,902.69/x
  3. Step 3: Cross multiply
    1,249,861.86x = 1,724,810.76 × 676,902.69
  4. Step 4: Simplify right side
    1,249,861.86x = 1,167,529,043,184.94
  5. Step 5: Solve for x
    x = 1,167,529,043,184.94/1,249,861.86
  6. Step 6: Final answer
    x = 934,126.47

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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.