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Finding the Fourth Proportional to 519,272.55, 778,616.65 and 357,356.79

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Solution

The fourth proportional to 519,272.55, 778,616.65 and 357,356.79 is: 535,834.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,272.55 : 778,616.65 = 357,356.79 : x
  2. Step 2: Convert to fraction form
    519,272.55/778,616.65 = 357,356.79/x
  3. Step 3: Cross multiply
    519,272.55x = 778,616.65 × 357,356.79
  4. Step 4: Simplify right side
    519,272.55x = 278,243,944,941.39
  5. Step 5: Solve for x
    x = 278,243,944,941.39/519,272.55
  6. Step 6: Final answer
    x = 535,834.11

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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.