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Finding the Fourth Proportional to 518,356.12, 715,328.26 and 292,074.52

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Solution

The fourth proportional to 518,356.12, 715,328.26 and 292,074.52 is: 403,061.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,356.12 : 715,328.26 = 292,074.52 : x
  2. Step 2: Convert to fraction form
    518,356.12/715,328.26 = 292,074.52/x
  3. Step 3: Cross multiply
    518,356.12x = 715,328.26 × 292,074.52
  4. Step 4: Simplify right side
    518,356.12x = 208,929,158,181.94
  5. Step 5: Solve for x
    x = 208,929,158,181.94/518,356.12
  6. Step 6: Final answer
    x = 403,061.04

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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.