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Finding the Fourth Proportional to 518,083.35, 714,954.24 and 291,730.47

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Solution

The fourth proportional to 518,083.35, 714,954.24 and 291,730.47 is: 402,587.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,083.35 : 714,954.24 = 291,730.47 : x
  2. Step 2: Convert to fraction form
    518,083.35/714,954.24 = 291,730.47/x
  3. Step 3: Cross multiply
    518,083.35x = 714,954.24 × 291,730.47
  4. Step 4: Simplify right side
    518,083.35x = 208,573,936,463.69
  5. Step 5: Solve for x
    x = 208,573,936,463.69/518,083.35
  6. Step 6: Final answer
    x = 402,587.61

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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.