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Finding the Fourth Proportional to 518,562, 777,974.22 and 144,585

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Solution

The fourth proportional to 518,562, 777,974.22 and 144,585 is: 216,914.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,562 : 777,974.22 = 144,585 : x
  2. Step 2: Convert to fraction form
    518,562/777,974.22 = 144,585/x
  3. Step 3: Cross multiply
    518,562x = 777,974.22 × 144,585
  4. Step 4: Simplify right side
    518,562x = 112,483,402,598.70
  5. Step 5: Solve for x
    x = 112,483,402,598.70/518,562
  6. Step 6: Final answer
    x = 216,914.09

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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.