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Finding the Fourth Proportional to 708,545.64, 977,756.76 and 386,223.96

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Solution

The fourth proportional to 708,545.64, 977,756.76 and 386,223.96 is: 532,969.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,545.64 : 977,756.76 = 386,223.96 : x
  2. Step 2: Convert to fraction form
    708,545.64/977,756.76 = 386,223.96/x
  3. Step 3: Cross multiply
    708,545.64x = 977,756.76 × 386,223.96
  4. Step 4: Simplify right side
    708,545.64x = 377,633,087,763.97
  5. Step 5: Solve for x
    x = 377,633,087,763.97/708,545.64
  6. Step 6: Final answer
    x = 532,969.32

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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.