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Finding the Fourth Proportional to 292,547.52, 438,821.30 and 70,931.52

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Solution

The fourth proportional to 292,547.52, 438,821.30 and 70,931.52 is: 106,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,547.52 : 438,821.30 = 70,931.52 : x
  2. Step 2: Convert to fraction form
    292,547.52/438,821.30 = 70,931.52/x
  3. Step 3: Cross multiply
    292,547.52x = 438,821.30 × 70,931.52
  4. Step 4: Simplify right side
    292,547.52x = 31,126,261,817.38
  5. Step 5: Solve for x
    x = 31,126,261,817.38/292,547.52
  6. Step 6: Final answer
    x = 106,397.28

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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.