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Finding the Fourth Proportional to 698,291.28, 963,683.19 and 525,905.19

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Solution

The fourth proportional to 698,291.28, 963,683.19 and 525,905.19 is: 725,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,291.28 : 963,683.19 = 525,905.19 : x
  2. Step 2: Convert to fraction form
    698,291.28/963,683.19 = 525,905.19/x
  3. Step 3: Cross multiply
    698,291.28x = 963,683.19 × 525,905.19
  4. Step 4: Simplify right side
    698,291.28x = 506,805,991,136.76
  5. Step 5: Solve for x
    x = 506,805,991,136.76/698,291.28
  6. Step 6: Final answer
    x = 725,780.21

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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.