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Finding the Fourth Proportional to 118,295.40, 163,250.12 and 64,582.68

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Solution

The fourth proportional to 118,295.40, 163,250.12 and 64,582.68 is: 89,125.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,295.40 : 163,250.12 = 64,582.68 : x
  2. Step 2: Convert to fraction form
    118,295.40/163,250.12 = 64,582.68/x
  3. Step 3: Cross multiply
    118,295.40x = 163,250.12 × 64,582.68
  4. Step 4: Simplify right side
    118,295.40x = 10,543,130,421.38
  5. Step 5: Solve for x
    x = 10,543,130,421.38/118,295.40
  6. Step 6: Final answer
    x = 89,125.45

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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.