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Finding the Fourth Proportional to 98,779.71, 136,316.01 and 53,457.71

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Solution

The fourth proportional to 98,779.71, 136,316.01 and 53,457.71 is: 73,771.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,779.71 : 136,316.01 = 53,457.71 : x
  2. Step 2: Convert to fraction form
    98,779.71/136,316.01 = 53,457.71/x
  3. Step 3: Cross multiply
    98,779.71x = 136,316.01 × 53,457.71
  4. Step 4: Simplify right side
    98,779.71x = 7,287,141,730.94
  5. Step 5: Solve for x
    x = 7,287,141,730.94/98,779.71
  6. Step 6: Final answer
    x = 73,771.65

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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.