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Finding the Fourth Proportional to 631,356.80, 945,998.40 and 525,603.20

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Solution

The fourth proportional to 631,356.80, 945,998.40 and 525,603.20 is: 787,541.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,356.80 : 945,998.40 = 525,603.20 : x
  2. Step 2: Convert to fraction form
    631,356.80/945,998.40 = 525,603.20/x
  3. Step 3: Cross multiply
    631,356.80x = 945,998.40 × 525,603.20
  4. Step 4: Simplify right side
    631,356.80x = 497,219,786,234.88
  5. Step 5: Solve for x
    x = 497,219,786,234.88/631,356.80
  6. Step 6: Final answer
    x = 787,541.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.