Home / 66,510.23-99,779.60-19,124.90

Finding the Fourth Proportional to 66,510.23, 99,779.60 and 19,124.90

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Solution

The fourth proportional to 66,510.23, 99,779.60 and 19,124.90 is: 28,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.23 : 99,779.60 = 19,124.90 : x
  2. Step 2: Convert to fraction form
    66,510.23/99,779.60 = 19,124.90/x
  3. Step 3: Cross multiply
    66,510.23x = 99,779.60 × 19,124.90
  4. Step 4: Simplify right side
    66,510.23x = 1,908,275,025.86
  5. Step 5: Solve for x
    x = 1,908,275,025.86/66,510.23
  6. Step 6: Final answer
    x = 28,691.45

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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.