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Finding the Fourth Proportional to 539,106.10, 808,853.55 and 519,666.10

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Solution

The fourth proportional to 539,106.10, 808,853.55 and 519,666.10 is: 779,686.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,106.10 : 808,853.55 = 519,666.10 : x
  2. Step 2: Convert to fraction form
    539,106.10/808,853.55 = 519,666.10/x
  3. Step 3: Cross multiply
    539,106.10x = 808,853.55 × 519,666.10
  4. Step 4: Simplify right side
    539,106.10x = 420,333,769,799.66
  5. Step 5: Solve for x
    x = 420,333,769,799.66/539,106.10
  6. Step 6: Final answer
    x = 779,686.54

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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.