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Finding the Fourth Proportional to 688,968.99, 950,808.85 and 383,076.78

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Solution

The fourth proportional to 688,968.99, 950,808.85 and 383,076.78 is: 528,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,968.99 : 950,808.85 = 383,076.78 : x
  2. Step 2: Convert to fraction form
    688,968.99/950,808.85 = 383,076.78/x
  3. Step 3: Cross multiply
    688,968.99x = 950,808.85 × 383,076.78
  4. Step 4: Simplify right side
    688,968.99x = 364,232,788,130.28
  5. Step 5: Solve for x
    x = 364,232,788,130.28/688,968.99
  6. Step 6: Final answer
    x = 528,663.54

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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.