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Finding the Fourth Proportional to 891,624.61, 1,230,441.81 and 509,659.59

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Solution

The fourth proportional to 891,624.61, 1,230,441.81 and 509,659.59 is: 703,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,624.61 : 1,230,441.81 = 509,659.59 : x
  2. Step 2: Convert to fraction form
    891,624.61/1,230,441.81 = 509,659.59/x
  3. Step 3: Cross multiply
    891,624.61x = 1,230,441.81 × 509,659.59
  4. Step 4: Simplify right side
    891,624.61x = 627,106,468,403.46
  5. Step 5: Solve for x
    x = 627,106,468,403.46/891,624.61
  6. Step 6: Final answer
    x = 703,330.15

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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.