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Finding the Fourth Proportional to 817,186.76, 1,225,780.14 and 256,265

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Solution

The fourth proportional to 817,186.76, 1,225,780.14 and 256,265 is: 384,397.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,186.76 : 1,225,780.14 = 256,265 : x
  2. Step 2: Convert to fraction form
    817,186.76/1,225,780.14 = 256,265/x
  3. Step 3: Cross multiply
    817,186.76x = 1,225,780.14 × 256,265
  4. Step 4: Simplify right side
    817,186.76x = 314,124,547,577.10
  5. Step 5: Solve for x
    x = 314,124,547,577.10/817,186.76
  6. Step 6: Final answer
    x = 384,397.50

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Similar ratio
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1.5x scale

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.