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Finding the Fourth Proportional to 93,070.41, 128,514.74 and 86,316.69

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Solution

The fourth proportional to 93,070.41, 128,514.74 and 86,316.69 is: 119,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,070.41 : 128,514.74 = 86,316.69 : x
  2. Step 2: Convert to fraction form
    93,070.41/128,514.74 = 86,316.69/x
  3. Step 3: Cross multiply
    93,070.41x = 128,514.74 × 86,316.69
  4. Step 4: Simplify right side
    93,070.41x = 11,092,966,541.43
  5. Step 5: Solve for x
    x = 11,092,966,541.43/93,070.41
  6. Step 6: Final answer
    x = 119,188.97

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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.