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Finding the Fourth Proportional to 356,423.70, 534,779.55 and 156,782.10

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Solution

The fourth proportional to 356,423.70, 534,779.55 and 156,782.10 is: 235,236.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,423.70 : 534,779.55 = 156,782.10 : x
  2. Step 2: Convert to fraction form
    356,423.70/534,779.55 = 156,782.10/x
  3. Step 3: Cross multiply
    356,423.70x = 534,779.55 × 156,782.10
  4. Step 4: Simplify right side
    356,423.70x = 83,843,860,886.06
  5. Step 5: Solve for x
    x = 83,843,860,886.06/356,423.70
  6. Step 6: Final answer
    x = 235,236.49

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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.