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Finding the Fourth Proportional to 528,545.10, 729,392.70 and 286,827.67

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Solution

The fourth proportional to 528,545.10, 729,392.70 and 286,827.67 is: 395,822.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,545.10 : 729,392.70 = 286,827.67 : x
  2. Step 2: Convert to fraction form
    528,545.10/729,392.70 = 286,827.67/x
  3. Step 3: Cross multiply
    528,545.10x = 729,392.70 × 286,827.67
  4. Step 4: Simplify right side
    528,545.10x = 209,210,008,656.01
  5. Step 5: Solve for x
    x = 209,210,008,656.01/528,545.10
  6. Step 6: Final answer
    x = 395,822.44

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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.