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Finding the Fourth Proportional to 626,281.34, 939,411.07 and 433,978.43

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Solution

The fourth proportional to 626,281.34, 939,411.07 and 433,978.43 is: 650,960.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,281.34 : 939,411.07 = 433,978.43 : x
  2. Step 2: Convert to fraction form
    626,281.34/939,411.07 = 433,978.43/x
  3. Step 3: Cross multiply
    626,281.34x = 939,411.07 × 433,978.43
  4. Step 4: Simplify right side
    626,281.34x = 407,684,135,501.22
  5. Step 5: Solve for x
    x = 407,684,135,501.22/626,281.34
  6. Step 6: Final answer
    x = 650,960.06

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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.