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Finding the Fourth Proportional to 891,886.14, 1,230,803.71 and 509,920.92

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Solution

The fourth proportional to 891,886.14, 1,230,803.71 and 509,920.92 is: 703,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,886.14 : 1,230,803.71 = 509,920.92 : x
  2. Step 2: Convert to fraction form
    891,886.14/1,230,803.71 = 509,920.92/x
  3. Step 3: Cross multiply
    891,886.14x = 1,230,803.71 × 509,920.92
  4. Step 4: Simplify right side
    891,886.14x = 627,612,558,867.81
  5. Step 5: Solve for x
    x = 627,612,558,867.81/891,886.14
  6. Step 6: Final answer
    x = 703,691.35

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Double scale
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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.