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Finding the Fourth Proportional to 355,436.80, 532,377.60 and 316,038.40

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Solution

The fourth proportional to 355,436.80, 532,377.60 and 316,038.40 is: 473,366.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,436.80 : 532,377.60 = 316,038.40 : x
  2. Step 2: Convert to fraction form
    355,436.80/532,377.60 = 316,038.40/x
  3. Step 3: Cross multiply
    355,436.80x = 532,377.60 × 316,038.40
  4. Step 4: Simplify right side
    355,436.80x = 168,251,764,899.84
  5. Step 5: Solve for x
    x = 168,251,764,899.84/355,436.80
  6. Step 6: Final answer
    x = 473,366.19

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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.