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Finding the Fourth Proportional to 459,518.70, 634,130.19 and 258,314.70

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Solution

The fourth proportional to 459,518.70, 634,130.19 and 258,314.70 is: 356,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,518.70 : 634,130.19 = 258,314.70 : x
  2. Step 2: Convert to fraction form
    459,518.70/634,130.19 = 258,314.70/x
  3. Step 3: Cross multiply
    459,518.70x = 634,130.19 × 258,314.70
  4. Step 4: Simplify right side
    459,518.70x = 163,805,149,790.79
  5. Step 5: Solve for x
    x = 163,805,149,790.79/459,518.70
  6. Step 6: Final answer
    x = 356,471.13

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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.