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Finding the Fourth Proportional to 520,763.78, 780,985.74 and 183,725.61

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Solution

The fourth proportional to 520,763.78, 780,985.74 and 183,725.61 is: 275,531.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,763.78 : 780,985.74 = 183,725.61 : x
  2. Step 2: Convert to fraction form
    520,763.78/780,985.74 = 183,725.61/x
  3. Step 3: Cross multiply
    520,763.78x = 780,985.74 × 183,725.61
  4. Step 4: Simplify right side
    520,763.78x = 143,487,081,482.80
  5. Step 5: Solve for x
    x = 143,487,081,482.80/520,763.78
  6. Step 6: Final answer
    x = 275,531.99

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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.