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Finding the Fourth Proportional to 539,077.60, 808,810.80 and 519,637.60

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Solution

The fourth proportional to 539,077.60, 808,810.80 and 519,637.60 is: 779,643.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,077.60 : 808,810.80 = 519,637.60 : x
  2. Step 2: Convert to fraction form
    539,077.60/808,810.80 = 519,637.60/x
  3. Step 3: Cross multiply
    539,077.60x = 808,810.80 × 519,637.60
  4. Step 4: Simplify right side
    539,077.60x = 420,288,502,966.08
  5. Step 5: Solve for x
    x = 420,288,502,966.08/539,077.60
  6. Step 6: Final answer
    x = 779,643.79

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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.