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Finding the Fourth Proportional to 413,346.84, 570,424.86 and 399,043.80

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Solution

The fourth proportional to 413,346.84, 570,424.86 and 399,043.80 is: 550,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,346.84 : 570,424.86 = 399,043.80 : x
  2. Step 2: Convert to fraction form
    413,346.84/570,424.86 = 399,043.80/x
  3. Step 3: Cross multiply
    413,346.84x = 570,424.86 × 399,043.80
  4. Step 4: Simplify right side
    413,346.84x = 227,624,503,748.87
  5. Step 5: Solve for x
    x = 227,624,503,748.87/413,346.84
  6. Step 6: Final answer
    x = 550,686.45

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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.