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Finding the Fourth Proportional to 922,862.80, 1,382,803.80 and 522,312.40

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Solution

The fourth proportional to 922,862.80, 1,382,803.80 and 522,312.40 is: 782,625.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,862.80 : 1,382,803.80 = 522,312.40 : x
  2. Step 2: Convert to fraction form
    922,862.80/1,382,803.80 = 522,312.40/x
  3. Step 3: Cross multiply
    922,862.80x = 1,382,803.80 × 522,312.40
  4. Step 4: Simplify right side
    922,862.80x = 722,255,571,507.12
  5. Step 5: Solve for x
    x = 722,255,571,507.12/922,862.80
  6. Step 6: Final answer
    x = 782,625.08

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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.