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Finding the Fourth Proportional to 118,392.95, 163,384.68 and 64,681.44

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Solution

The fourth proportional to 118,392.95, 163,384.68 and 64,681.44 is: 89,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,392.95 : 163,384.68 = 64,681.44 : x
  2. Step 2: Convert to fraction form
    118,392.95/163,384.68 = 64,681.44/x
  3. Step 3: Cross multiply
    118,392.95x = 163,384.68 × 64,681.44
  4. Step 4: Simplify right side
    118,392.95x = 10,567,956,376.34
  5. Step 5: Solve for x
    x = 10,567,956,376.34/118,392.95
  6. Step 6: Final answer
    x = 89,261.71

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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.