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Finding the Fourth Proportional to 118,643.10, 163,702.12 and 70,260.23

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Solution

The fourth proportional to 118,643.10, 163,702.12 and 70,260.23 is: 96,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,643.10 : 163,702.12 = 70,260.23 : x
  2. Step 2: Convert to fraction form
    118,643.10/163,702.12 = 70,260.23/x
  3. Step 3: Cross multiply
    118,643.10x = 163,702.12 × 70,260.23
  4. Step 4: Simplify right side
    118,643.10x = 11,501,748,602.69
  5. Step 5: Solve for x
    x = 11,501,748,602.69/118,643.10
  6. Step 6: Final answer
    x = 96,944.10

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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.