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Finding the Fourth Proportional to 284,103.60, 392,053.56 and 156,779.28

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Solution

The fourth proportional to 284,103.60, 392,053.56 and 156,779.28 is: 216,350.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,103.60 : 392,053.56 = 156,779.28 : x
  2. Step 2: Convert to fraction form
    284,103.60/392,053.56 = 156,779.28/x
  3. Step 3: Cross multiply
    284,103.60x = 392,053.56 × 156,779.28
  4. Step 4: Simplify right side
    284,103.60x = 61,465,874,858.24
  5. Step 5: Solve for x
    x = 61,465,874,858.24/284,103.60
  6. Step 6: Final answer
    x = 216,350.21

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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.