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Finding the Fourth Proportional to 528,547.72, 729,396.32 and 286,830.29

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Solution

The fourth proportional to 528,547.72, 729,396.32 and 286,830.29 is: 395,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,547.72 : 729,396.32 = 286,830.29 : x
  2. Step 2: Convert to fraction form
    528,547.72/729,396.32 = 286,830.29/x
  3. Step 3: Cross multiply
    528,547.72x = 729,396.32 × 286,830.29
  4. Step 4: Simplify right side
    528,547.72x = 209,212,957,990.53
  5. Step 5: Solve for x
    x = 209,212,957,990.53/528,547.72
  6. Step 6: Final answer
    x = 395,826.05

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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.