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Finding the Fourth Proportional to 434,561.70, 651,623.85 and 257,123.10

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Solution

The fourth proportional to 434,561.70, 651,623.85 and 257,123.10 is: 385,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,561.70 : 651,623.85 = 257,123.10 : x
  2. Step 2: Convert to fraction form
    434,561.70/651,623.85 = 257,123.10/x
  3. Step 3: Cross multiply
    434,561.70x = 651,623.85 × 257,123.10
  4. Step 4: Simplify right side
    434,561.70x = 167,547,544,345.94
  5. Step 5: Solve for x
    x = 167,547,544,345.94/434,561.70
  6. Step 6: Final answer
    x = 385,555.25

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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.