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Finding the Fourth Proportional to 518,366.34, 777,549.51 and 219,184.74

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Solution

The fourth proportional to 518,366.34, 777,549.51 and 219,184.74 is: 328,777.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,366.34 : 777,549.51 = 219,184.74 : x
  2. Step 2: Convert to fraction form
    518,366.34/777,549.51 = 219,184.74/x
  3. Step 3: Cross multiply
    518,366.34x = 777,549.51 × 219,184.74
  4. Step 4: Simplify right side
    518,366.34x = 170,426,987,186.48
  5. Step 5: Solve for x
    x = 170,426,987,186.48/518,366.34
  6. Step 6: Final answer
    x = 328,777.11

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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.