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Finding the Fourth Proportional to 518,476.90, 777,751.80 and 293,944.90

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Solution

The fourth proportional to 518,476.90, 777,751.80 and 293,944.90 is: 440,938.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,476.90 : 777,751.80 = 293,944.90 : x
  2. Step 2: Convert to fraction form
    518,476.90/777,751.80 = 293,944.90/x
  3. Step 3: Cross multiply
    518,476.90x = 777,751.80 × 293,944.90
  4. Step 4: Simplify right side
    518,476.90x = 228,616,175,075.82
  5. Step 5: Solve for x
    x = 228,616,175,075.82/518,476.90
  6. Step 6: Final answer
    x = 440,938.01

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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.