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Finding the Fourth Proportional to 93,316.55, 128,779.47 and 57,023.91

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Solution

The fourth proportional to 93,316.55, 128,779.47 and 57,023.91 is: 78,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,316.55 : 128,779.47 = 57,023.91 : x
  2. Step 2: Convert to fraction form
    93,316.55/128,779.47 = 57,023.91/x
  3. Step 3: Cross multiply
    93,316.55x = 128,779.47 × 57,023.91
  4. Step 4: Simplify right side
    93,316.55x = 7,343,508,907.13
  5. Step 5: Solve for x
    x = 7,343,508,907.13/93,316.55
  6. Step 6: Final answer
    x = 78,694.61

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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.