Home / 191,526.40-287,289.60-66,851.20

Finding the Fourth Proportional to 191,526.40, 287,289.60 and 66,851.20

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Solution

The fourth proportional to 191,526.40, 287,289.60 and 66,851.20 is: 100,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,526.40 : 287,289.60 = 66,851.20 : x
  2. Step 2: Convert to fraction form
    191,526.40/287,289.60 = 66,851.20/x
  3. Step 3: Cross multiply
    191,526.40x = 287,289.60 × 66,851.20
  4. Step 4: Simplify right side
    191,526.40x = 19,205,654,507.52
  5. Step 5: Solve for x
    x = 19,205,654,507.52/191,526.40
  6. Step 6: Final answer
    x = 100,276.80

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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.