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Finding the Fourth Proportional to 1,913,886.17, 2,870,733.84 and 715,720.40

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Solution

The fourth proportional to 1,913,886.17, 2,870,733.84 and 715,720.40 is: 1,073,544.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,886.17 : 2,870,733.84 = 715,720.40 : x
  2. Step 2: Convert to fraction form
    1,913,886.17/2,870,733.84 = 715,720.40/x
  3. Step 3: Cross multiply
    1,913,886.17x = 2,870,733.84 × 715,720.40
  4. Step 4: Simplify right side
    1,913,886.17x = 2,054,642,772,258.34
  5. Step 5: Solve for x
    x = 2,054,642,772,258.34/1,913,886.17
  6. Step 6: Final answer
    x = 1,073,544.92

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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.