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Finding the Fourth Proportional to 519,863.51, 778,707.46 and 418,111.63

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Solution

The fourth proportional to 519,863.51, 778,707.46 and 418,111.63 is: 626,292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,863.51 : 778,707.46 = 418,111.63 : x
  2. Step 2: Convert to fraction form
    519,863.51/778,707.46 = 418,111.63/x
  3. Step 3: Cross multiply
    519,863.51x = 778,707.46 × 418,111.63
  4. Step 4: Simplify right side
    519,863.51x = 325,586,642,401.71
  5. Step 5: Solve for x
    x = 325,586,642,401.71/519,863.51
  6. Step 6: Final answer
    x = 626,292.55

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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.