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Finding the Fourth Proportional to 563,598.76, 777,765.90 and 308,954.20

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Solution

The fourth proportional to 563,598.76, 777,765.90 and 308,954.20 is: 426,356.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,598.76 : 777,765.90 = 308,954.20 : x
  2. Step 2: Convert to fraction form
    563,598.76/777,765.90 = 308,954.20/x
  3. Step 3: Cross multiply
    563,598.76x = 777,765.90 × 308,954.20
  4. Step 4: Simplify right side
    563,598.76x = 240,294,041,421.78
  5. Step 5: Solve for x
    x = 240,294,041,421.78/563,598.76
  6. Step 6: Final answer
    x = 426,356.58

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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.