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Finding the Fourth Proportional to 153,329.61, 211,594.83 and 85,345.13

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Solution

The fourth proportional to 153,329.61, 211,594.83 and 85,345.13 is: 117,776.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,329.61 : 211,594.83 = 85,345.13 : x
  2. Step 2: Convert to fraction form
    153,329.61/211,594.83 = 85,345.13/x
  3. Step 3: Cross multiply
    153,329.61x = 211,594.83 × 85,345.13
  4. Step 4: Simplify right side
    153,329.61x = 18,058,587,772.47
  5. Step 5: Solve for x
    x = 18,058,587,772.47/153,329.61
  6. Step 6: Final answer
    x = 117,776.26

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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.