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Finding the Fourth Proportional to 698,293.78, 963,686.65 and 525,907.70

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Solution

The fourth proportional to 698,293.78, 963,686.65 and 525,907.70 is: 725,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,293.78 : 963,686.65 = 525,907.70 : x
  2. Step 2: Convert to fraction form
    698,293.78/963,686.65 = 525,907.70/x
  3. Step 3: Cross multiply
    698,293.78x = 963,686.65 × 525,907.70
  4. Step 4: Simplify right side
    698,293.78x = 506,810,229,622.21
  5. Step 5: Solve for x
    x = 506,810,229,622.21/698,293.78
  6. Step 6: Final answer
    x = 725,783.68

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1.5x scale

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.