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Finding the Fourth Proportional to 573,312.90, 859,969.35 and 258,384.90

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Solution

The fourth proportional to 573,312.90, 859,969.35 and 258,384.90 is: 387,577.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,312.90 : 859,969.35 = 258,384.90 : x
  2. Step 2: Convert to fraction form
    573,312.90/859,969.35 = 258,384.90/x
  3. Step 3: Cross multiply
    573,312.90x = 859,969.35 × 258,384.90
  4. Step 4: Simplify right side
    573,312.90x = 222,203,094,502.82
  5. Step 5: Solve for x
    x = 222,203,094,502.82/573,312.90
  6. Step 6: Final answer
    x = 387,577.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.