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Finding the Fourth Proportional to 105,607.50, 145,702.47 and 60,252.90

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Solution

The fourth proportional to 105,607.50, 145,702.47 and 60,252.90 is: 83,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,607.50 : 145,702.47 = 60,252.90 : x
  2. Step 2: Convert to fraction form
    105,607.50/145,702.47 = 60,252.90/x
  3. Step 3: Cross multiply
    105,607.50x = 145,702.47 × 60,252.90
  4. Step 4: Simplify right side
    105,607.50x = 8,778,996,354.66
  5. Step 5: Solve for x
    x = 8,778,996,354.66/105,607.50
  6. Step 6: Final answer
    x = 83,128.53

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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.