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Finding the Fourth Proportional to 560,778.04, 774,885.48 and 399,352.84

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Solution

The fourth proportional to 560,778.04, 774,885.48 and 399,352.84 is: 551,827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,778.04 : 774,885.48 = 399,352.84 : x
  2. Step 2: Convert to fraction form
    560,778.04/774,885.48 = 399,352.84/x
  3. Step 3: Cross multiply
    560,778.04x = 774,885.48 × 399,352.84
  4. Step 4: Simplify right side
    560,778.04x = 309,452,717,112.76
  5. Step 5: Solve for x
    x = 309,452,717,112.76/560,778.04
  6. Step 6: Final answer
    x = 551,827.45

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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.