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Finding the Fourth Proportional to 14,058.71, 19,400.42 and 7,685.18

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Solution

The fourth proportional to 14,058.71, 19,400.42 and 7,685.18 is: 10,605.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,058.71 : 19,400.42 = 7,685.18 : x
  2. Step 2: Convert to fraction form
    14,058.71/19,400.42 = 7,685.18/x
  3. Step 3: Cross multiply
    14,058.71x = 19,400.42 × 7,685.18
  4. Step 4: Simplify right side
    14,058.71x = 149,095,681.35
  5. Step 5: Solve for x
    x = 149,095,681.35/14,058.71
  6. Step 6: Final answer
    x = 10,605.22

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Double scale
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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.