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Finding the Fourth Proportional to 518,684.61, 777,983.16 and 293,336.13

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Solution

The fourth proportional to 518,684.61, 777,983.16 and 293,336.13 is: 439,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,684.61 : 777,983.16 = 293,336.13 : x
  2. Step 2: Convert to fraction form
    518,684.61/777,983.16 = 293,336.13/x
  3. Step 3: Cross multiply
    518,684.61x = 777,983.16 × 293,336.13
  4. Step 4: Simplify right side
    518,684.61x = 228,210,573,377.02
  5. Step 5: Solve for x
    x = 228,210,573,377.02/518,684.61
  6. Step 6: Final answer
    x = 439,979.45

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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.