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Finding the Fourth Proportional to 519,996.95, 779,422.95 and 340,008.15

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Solution

The fourth proportional to 519,996.95, 779,422.95 and 340,008.15 is: 509,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,996.95 : 779,422.95 = 340,008.15 : x
  2. Step 2: Convert to fraction form
    519,996.95/779,422.95 = 340,008.15/x
  3. Step 3: Cross multiply
    519,996.95x = 779,422.95 × 340,008.15
  4. Step 4: Simplify right side
    519,996.95x = 265,010,155,297.04
  5. Step 5: Solve for x
    x = 265,010,155,297.04/519,996.95
  6. Step 6: Final answer
    x = 509,637.90

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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.