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Finding the Fourth Proportional to 317,766.86, 438,335.20 and 190,368.64

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Solution

The fourth proportional to 317,766.86, 438,335.20 and 190,368.64 is: 262,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,766.86 : 438,335.20 = 190,368.64 : x
  2. Step 2: Convert to fraction form
    317,766.86/438,335.20 = 190,368.64/x
  3. Step 3: Cross multiply
    317,766.86x = 438,335.20 × 190,368.64
  4. Step 4: Simplify right side
    317,766.86x = 83,445,272,744.61
  5. Step 5: Solve for x
    x = 83,445,272,744.61/317,766.86
  6. Step 6: Final answer
    x = 262,599.05

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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.