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Finding the Fourth Proportional to 473,817.20, 653,866.18 and 258,957.21

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Solution

The fourth proportional to 473,817.20, 653,866.18 and 258,957.21 is: 357,360.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,817.20 : 653,866.18 = 258,957.21 : x
  2. Step 2: Convert to fraction form
    473,817.20/653,866.18 = 258,957.21/x
  3. Step 3: Cross multiply
    473,817.20x = 653,866.18 × 258,957.21
  4. Step 4: Simplify right side
    473,817.20x = 169,323,361,038.77
  5. Step 5: Solve for x
    x = 169,323,361,038.77/473,817.20
  6. Step 6: Final answer
    x = 357,360.10

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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.