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Finding the Fourth Proportional to 562,981.32, 776,899.02 and 321,259.56

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Solution

The fourth proportional to 562,981.32, 776,899.02 and 321,259.56 is: 443,329.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,981.32 : 776,899.02 = 321,259.56 : x
  2. Step 2: Convert to fraction form
    562,981.32/776,899.02 = 321,259.56/x
  3. Step 3: Cross multiply
    562,981.32x = 776,899.02 × 321,259.56
  4. Step 4: Simplify right side
    562,981.32x = 249,586,237,329.63
  5. Step 5: Solve for x
    x = 249,586,237,329.63/562,981.32
  6. Step 6: Final answer
    x = 443,329.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.