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Finding the Fourth Proportional to 922,140, 1,273,602.96 and 619,809.12

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Solution

The fourth proportional to 922,140, 1,273,602.96 and 619,809.12 is: 856,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,140 : 1,273,602.96 = 619,809.12 : x
  2. Step 2: Convert to fraction form
    922,140/1,273,602.96 = 619,809.12/x
  3. Step 3: Cross multiply
    922,140x = 1,273,602.96 × 619,809.12
  4. Step 4: Simplify right side
    922,140x = 789,390,729,867.00
  5. Step 5: Solve for x
    x = 789,390,729,867.00/922,140
  6. Step 6: Final answer
    x = 856,042.17

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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.