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Finding the Fourth Proportional to 468,681.32, 646,776.80 and 253,816.40

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Solution

The fourth proportional to 468,681.32, 646,776.80 and 253,816.40 is: 350,264.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,681.32 : 646,776.80 = 253,816.40 : x
  2. Step 2: Convert to fraction form
    468,681.32/646,776.80 = 253,816.40/x
  3. Step 3: Cross multiply
    468,681.32x = 646,776.80 × 253,816.40
  4. Step 4: Simplify right side
    468,681.32x = 164,162,558,979.52
  5. Step 5: Solve for x
    x = 164,162,558,979.52/468,681.32
  6. Step 6: Final answer
    x = 350,264.78

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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.