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Finding the Fourth Proportional to 1,390,406, 1,917,715.76 and 932,037.52

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Solution

The fourth proportional to 1,390,406, 1,917,715.76 and 932,037.52 is: 1,285,511.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,406 : 1,917,715.76 = 932,037.52 : x
  2. Step 2: Convert to fraction form
    1,390,406/1,917,715.76 = 932,037.52/x
  3. Step 3: Cross multiply
    1,390,406x = 1,917,715.76 × 932,037.52
  4. Step 4: Simplify right side
    1,390,406x = 1,787,383,041,015.32
  5. Step 5: Solve for x
    x = 1,787,383,041,015.32/1,390,406
  6. Step 6: Final answer
    x = 1,285,511.60

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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.