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Finding the Fourth Proportional to 520,001.65, 778,690.28 and 415,025.65

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Solution

The fourth proportional to 520,001.65, 778,690.28 and 415,025.65 is: 621,491.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,001.65 : 778,690.28 = 415,025.65 : x
  2. Step 2: Convert to fraction form
    520,001.65/778,690.28 = 415,025.65/x
  3. Step 3: Cross multiply
    520,001.65x = 778,690.28 × 415,025.65
  4. Step 4: Simplify right side
    520,001.65x = 323,176,437,530.55
  5. Step 5: Solve for x
    x = 323,176,437,530.55/520,001.65
  6. Step 6: Final answer
    x = 621,491.18

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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.