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Finding the Fourth Proportional to 93,130.86, 128,513.07 and 64,897.50

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Solution

The fourth proportional to 93,130.86, 128,513.07 and 64,897.50 is: 89,553.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,130.86 : 128,513.07 = 64,897.50 : x
  2. Step 2: Convert to fraction form
    93,130.86/128,513.07 = 64,897.50/x
  3. Step 3: Cross multiply
    93,130.86x = 128,513.07 × 64,897.50
  4. Step 4: Simplify right side
    93,130.86x = 8,340,176,960.33
  5. Step 5: Solve for x
    x = 8,340,176,960.33/93,130.86
  6. Step 6: Final answer
    x = 89,553.31

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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.